The Quite Incredible Number List: 401-500
| 401 | 401 was the hull number of the RMS Titanic. | Strawberry |
| 402 | The Kids from Room 402 is a US television programme that originally aired on Fox Family in 1999. | GuyBarry |
| 403 | The Peugeot 403 became world famous because it was the model driven by one Lieutenant Frank Columbo.
| AlmondFacialBar |
| 404 | 404 is the ubiquitous "page not found" error code for the World-Wide Web. | PDR |
| 405 | The '405' is the local nickname for the downtown area of Oklahoma City, based upon its telephone code. | chrisboote |
| 406 | The 406 is a bus route in Melbourne, running in the western suburbs. | Awitt |
| 407 | There are only four three-digit narcissistic numbers - numbers that are the sum of the cubes of their own digits. Three of them are 153, 370 and 371. The fourth is 407 = 43 + 03 + 73. | GuyBarry |
| 408 | 408 CE was the year the first Byzantine emperor, Flavius Arcadius, died. | AlmondFacialBar |
| 409 | 409 is a song by the Beach Boys, originally released as the B-side to "Surfin' Safari". The title is a reference to the Chevrolet 409. | GuyBarry |
| 410 | The .410 bore is the smallest gauge of gun shell commonly available. | AlmondFacialBar |
| 411 | 411 is a US slang term for "information", derived from the number normally used for directory assistance (as directory enquiries is known over there). | GuyBarry |
| 412 | Section 412 is part of the Australian Migration Act of 1958. | Awitt |
| 413 | 413 was the year Augustine began to write City of God, which was later not adapted into the movie of the same name. | Webster100 |
| 414 | There are 414 steps to the top of the Campanile next to the Duomo in Florence. | chrisboote |
| 415 | 415 Records was a San Francisco record label created in 1978, specializing in punk rock and new wave music. | GuyBarry |
| 416 | Highway 416 is referred to as the Veterans highway, through Ontario, Canada. | Awitt |
| 417 | §417 of the German Civil Procedure Code concerns itself with the power of proof of a publicly issued legal certificate. | AlmondFacialBar |
| 418 | The Hyper Text Coffee Pot Control Protocol, published as an April Fool's joke in 1998, contained the error code "418 I'm a teapot". | GuyBarry |
| 419 | The "Nigerian Scam" is also known as a 419 scam as it is covered by that number part of the Nigerian Legal Code. | Big Martin |
| 420 | 420 is an American slang term referring to cannabis consumption. | GuyBarry |
| 421 | The New South Wales 421 class are a class of diesel locomotive built by Clyde Engineering, Granville for the New South Wales Government Railways between December 1965 and July 1966. | Awitt |
| 422 | 422 is the maximum number of regions into which 21 circles divide the plane. | GuyBarry |
| 423 | 423 is one of the easiest patterns for juggling three balls. | Webster100 |
| 424 | The 4-2-4 was the first formation in association football to be described using numbers. | Ed. |
| 425 | Section 425 of the Australian Crime Act of 1958 lists alternative verdicts for certain charges. | Awitt |
| 426 | The Chrysler 426 Hemi engine, first produced in 1964, was nicknamed "The Elephant". | GuyBarry |
| 427 | The Shelby-modified Ford 427 cu in (7 litre) V8 engine was the archetypal american "muscle" sports car engine of the late 60s and early 70s. Crude but reliable, the engine developed less than half the specific output of the more sophisticated european engines, but being big, lazy and under-stressed they were extremely reliable and tolerant of abuse. | PDR |
| 428 | Betelgeuse is 428 light years away. | AlmondFacialBar |
| 429 | 429 Records is an American record label. | GuyBarry |
| 430 | The Ferrari F430 is a sports car produced from 2004 to 2009. | Strawberry |
| 431 | 431 Squadron of the Royal Canadian Air Force (the Snowbirds) are an aerobatic display team. | chrisboote |
| 432 | In the late 19th century, the composer Giuseppe Verdi tried to standardise orchestral pitch so that the note A above middle C was set to 432 Hz, sometimes known as "Verdi tuning". (440 Hz is now commonly used as the standard.) | Awitt |
| 433 | 433 metres medium wave (corresponding to a frequency of 693 kHz) is one of the wavelengths on which BBC Radio 5 Live is transmitted. | GuyBarry |
| 434 | 434 is the ID of the agouti gene in mice. | AlmondFacialBar |
| 435 | There are 435 members of the US House of Representatives. | Webster100 |
| 436 | Gliese 436b is an Exoplanet covered in ice even though its surface temperature is 439 degrees C. This is assumed to be due to its high atmospheric pressure keeping the water solid in a process called "hot ice". | GuyBarry |
| 437 | The Republic of Ireland's Statutory Instrument 437/2011 concerns itself with the reform of the Irish Central Bank in the wake of the 2008 economic crash. | AlmondFacialBar |
| 438 | 438 Marketing is a brand communications agency with offices in Knutsford, Cheshire and Sevenoaks, Kent. | GuyBarry |
| 439 | 439 Ohio is a main-belt asteroid discovered in 1898. | Strawberry |
| 440 | The .440 Cor-bon cartridge is designed to give better penetration and stopping for lower recoil for Magnum .44 handguns | chrisboote |
| 441 | 441 and its reverse are both perfect squares. (441 = 212, 144 = 122.) | GuyBarry |
| 442 | When the 4-4-2 formation was first introduced to German professional football it was highly controversial and cost at least one coach his job. | AlmondFacialBar |
| 443 | Route 443 is the main road connecting Tel Aviv with Jerusalem and the Israeli settlements in the West Bank. Palestinians were banned from using it in 2002 and, although the ban was lifted in 2010, access is still highly problematic for them. | GuyBarry |
| 444 | 444 is the name of two, unrelated electronic music songs, by Autechre and The Fireman. | Webster100 |
| 445 | The year 46 BC was 445 days long, owing to the change in the Roman calendar brought in by Julius Caesar. | GuyBarry |
| 446 | 446 Aeternitas is an asteroid discovered in 1899. | Strawberry |
| 447 | Flight AF 447 crashed into the Atlantic on its way from Rio De Janeiro to Paris on 01-June-2009 with no survivors. The conclusive accident report took over three years to assemble and blames an ignored technical problem plus pilot error. | AlmondFacialBar |
| 448 | The long term effect of listening Mozart's K.448 "Sonata for Two Pianos" seems to be to significantly reduce seizures in epileptic children. | chrisboote |
| 449 | 449 are an alternative rock band from Burkesville, Kentucky. | GuyBarry |
| 450 | 450 million years ago marks the first appearance of sea urchins in the fossil record. | AlmondFacialBar |
| 451 | The title of Ray Bradbury's novel Fahrenheit 451 comes from the temperature at which paper supposedly burns - about 233 degrees C. (There seems to be a lot of variation between sources as to the actual figure though: one source puts it as high as 450 degrees C.) | GuyBarry |
| 452 | 452 Squadron is a Royal Australian Air Force (RAAF) air traffic control unit. It was originally formed in 1941 as a fighter squadron. | Awitt |
| 453 | 453 is the only number n such that n, 2n, and 6n together contain every digit exactly once: 453, 906, 2718. | GuyBarry |
| 454 | 454 metric grams make one imperial pound (to the nearest gram). | AlmondFacialBar |
| 455 | .455 Webley is a British handgun cartridge, most commonly used in the Webley top break revolvers Marks I through VI. | Efros |
| 456 | In Torchwood the 456 were an alien race who used human children as a recreational drug. | AlmondFacialBar |
| 457 | A 457 visa allows temporary skilled workers to come to Australia and work for an approved business for up to four years. | GuyBarry |
| 458 | In 2012 458 Ferrari 458s were newly registered in Germany. | AlmondFacialBar |
| 459 | If you reverse the digits of 459, and then subtract the original number, you get another number with the same digits: 954 - 459 = 495. 459 is the smallest number with this property. | Ed. |
| 460 | .460 and .460 Magnum may refer to four different firearms cartridges: .460 Weatherby Magnum, .460 S&W Magnum, .460 Steyr and .460 Rowland. | Efros |
| 461 | There are 461 ways to stack 18 pennies in contiguous rows so that each penny lies on the table or on two pennies. | GuyBarry |
| 462 | In 462 CE one of the seven wonders of the ancient world, the Statue of Zeus at Olympia was destroyed by fire after being moved to Constantinople. | AlmondFacialBar |
| 463 | 463 Communications is a company based in Washington, DC and San Francisco. The name comes from a type of "double play" in baseball. | GuyBarry |
| 464 | 464 Gallery was an art gallery/gift shop and event space in Buffalo, New York, which closed in 2016. | Awitt |
| 465 | A465 is the number of the "Heads of the Valleys Road", a major road linking the northern ends of the South Wales Valleys. | GuyBarry |
| 466 | K. 466 is the 20th Piano Concerto in d-minor. | AlmondFacialBar |
| 467 | 467 was the year of the consulship of Pusaeus and Iohannes. | 'yorz |
| 468 | London Bus route 468 runs from the Elephant and Castle to South Croydon. | AlmondFacialBar |
| 469 | 469 is a value of n for which n! - 1 is prime. | GuyBarry |
| 470 | In the Dewey Decimal classification 470 is allocated to Latin and Italic languages. | PDR |
| 471 | Food additive E471 is mono & diglycerides, fatty acids used as emulsifiers and stabilisers. | Big Martin |
| 472 | Thai airways flight 472 goes from Sydney to Bangkok. The route normally operates a Boeing 747-400. | franticllama |
| 473 | Until 2019, US Postal Exam 473 was taken by applicants for letter carrier and postal processing positions. It has since been superseded by exams 474, 475, 476 and 477. | GuyBarry |
| 474 | Vinyl tape 474 is a grey, 6.3 mm flame resistant tape and ideal for a vapour barrier. | Awitt |
| 475 | 475 has a square that is made up of the squares of other numbers: 475 squared = 225625, 15 squared = 225, and 25 squared = 625. (Also 256 occurs inside it, which is 16 squared.) | GuyBarry |
| 476 | 476 is a type of visa that allows recent engineering graduates to get up to 18 months of work experience in Australia. | Awitt |
| 477 | Dusknoir is the Pokémon whose number is 477. A Dusknoir appears in Pokémon Mystery Dungeon: Explorers of Time/Darkness as a main villain of the game. He is a tyrant from the future world and deceives everyone into trusting him. | chrisboote |
| 478 | 478 is a Pell-Lucas number (or companion Pell number). | Strawberry |
| 479 | 479° Popcorn comes from San Francisco. | GuyBarry |
| 480 | 480 Hansa is a minor planet orbiting the Sun, and the namesake for the Hansa family of high-inclination asteroids. | Strawberry |
| 481 | In humans, gene 481 codes for a protein that is used in cell membranes. | Webster100 |
| 482 | 01482 (previously 0482) is the dialling code for Hull - unique because it's the only UK code area not covered by the BT network. Phone services mainly come from the local telecoms provider KCOM. | GuyBarry |
| 483 | AS483 is the standard covering minimum requirements for skid control equipment for use on all types and models of civil aircraft. | chrisboote |
| 484 | 484 is a palindromic perfect square - one of only three with three digits. | GuyBarry |
| 485 | At the time, Year 485 was also known by the eloquent nickname, "Year of the Consulship of Memmius without colleague." | Webster100 |
| 486 | 486 is the number of a seasonal bus service run by Bus Éireann from Dublin to the island of Lough Derg, one of the oldest places of pilgrimage in the Christian world. In 2023 it ran from 2 June to 14 August. | Ed., based on chrisboote |
| 487 | 1/3 = 0.33333333333... The repeating part is 3, and 3 divides 3. When does this next happen? Not until 1/487 = 0.00205338809034... (the repeating part is too long to write out, but 487 divides into it). The only other number for which this property is known is 56598313. | GuyBarry |
| 488 | Local 488 represents the United Association of Plumbers and Pipefitters in Edmonton, AB, Canada. | AlmondFacialBar |
| 489 | 489 is the ninth octahedral number, representing the number of close-packed spheres in an octahedron with nine on each side. | GuyBarry |
| 490 | 490 is the area code for the city of Thalassery in India. | AlmondFacialBar |
| 491 | 491 is a 1964 Swedish black-and-white drama film directed by Vilgot Sjöman, based on a novel by Lars Görling. | Awitt |
| 492 | The number A492 is not currently allocated to a road in Great Britain. It was originally a route from Llangurig to Caersws that was incorporated into the A470. | GuyBarry |
| 493 | United Nations Security Council resolution 493 from 1981 concerned itself with the aftermath of the Yom Kippur War. | AlmondFacialBar |
| 494 | St George, patron saint of England, was canonized in 494. He is also the patron saint of Georgia, Egypt, Bulgaria, Aragon, Catalonia, Romania, Ethiopia, Greece, India, Iraq, Israel, Lebanon, Lithuania, Palestine, Portugal, Serbia, Ukraine and Russia, as well as the cities of Genoa, Amersfoort, Beirut, Botoşani, Drobeta Turnu-Severin, Timişoara, Fakiha, Bteghrine, Cáceres, Ferrara, Freiburg im Breisgau, Kragujevac, Kumanovo, Ljubljana, Pérouges, Pomorie, Preston, Qormi, Rio de Janeiro, Lod, Lviv, Barcelona, Moscow and Victoria. Plus the Boy Scout movement, the Romany, people with skin diseases or herpes or leprosy or syphilis or the plague, agricultural workers, archers; armourers, the Bulgarian Army, butchers, cavalrymen, chivalry, The Corinthians (a Brazilian football team), Crusaders, equestrians, farmers, field workers, horses, animal husbandmen, knights, the Order of the Garter, the Portuguese Army and Navy, saddle makers, sheep and shepherds, soldiers, and the Teutonic Knights. | chrisboote |
| 495 | Try this little mathematical exercise:
| (1) Start with any three-digit number with at least two digits different. |
| (2) Arrange the digits in ascending and then in descending order to get two three-digit numbers, adding leading zeros if necessary. |
| (3) Subtract the smaller number from the bigger number. |
| (4) Go back to step 2. |
Repeating this process will always reach 495 in a few steps. Once 495 is reached, the process stops because 954 - 459 = 495.
E.g. start with 681: 861 - 168 = 693, 963 - 369 = 594, 954 - 459 = 495. | GuyBarry |
| 496 | 496 is of vital importance to superstring theory. In 1984, Michael Green and John H. Schwarz made a discovery regarding the number 496 that started the first superstring revolution. | AlmondFacialBar |
| 497 | United Nations Security Council resolution 497, adopted unanimously on 17 December 1981, calls on the State of Israel to rescind its de facto annexation of the Golan Heights. | GuyBarry |
| 498 | The 498 Spanish Martyrs were victims of the Spanish Civil War. | Big Martin |
| 499 | Hanif Mohammad was run out for 499 playing for Karachi against Bahawalpur in 1959, a record for the highest individual first-class innings that stood until Brian Lara's 501 in 1994. | GuyBarry |
| 500 | The Fiat 500 is a city car produced by the Italian manufacturer Fiat between 1957 and 1975. | Strawberry |
