437
437 is a composite number, odd, a calendar year.
Historical context — 437 AD
Calendar year
Year 437 (CDXXXVII) was a common year starting on Friday of the Julian calendar.
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Historical context — 437 BC
Calendar year
Year 437 BC was a year of the pre-Julian Roman calendar.
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Year facts
- Year type
-
Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
- Days in year
- 365
- ISO weeks
-
53
Long year: contains 53 ISO weeks.
- Started on
-
Thursday
January 1, 437
- Ended on
-
Thursday
December 31, 437
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
430s
430–439
- Century
-
5th century
401–500
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,589
1589 years before 2026.
In other calendars
- Hebrew
-
4197 / 4198 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Fire zodiac:Ox
Sexagenary cycle position 14 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
980 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
429 / 430 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
359 / 358 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 19 × 23
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- four hundred thirty-seven
- Ordinal
- 437th
- Roman numeral
- CDXXXVII
- Binary
- 110110101
- Octal
- 665
- Hexadecimal
- 0x1B5
- Base64
- AbU=
- One's complement
- 65,098 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- υλζʹ
- Mayan (base 20)
- 𝋡·𝋡·𝋱
- Chinese
- 四百三十七
- Chinese (financial)
- 肆佰參拾柒
Digit at this position in famous constants
- π — Pi (π)
- Digit 437 = 6
- e — Euler's number (e)
- Digit 437 = 7
- φ — Golden ratio (φ)
- Digit 437 = 6
- √2 — Pythagoras's (√2)
- Digit 437 = 4
- ln 2 — Natural log of 2
- Digit 437 = 7
- γ — Euler-Mascheroni (γ)
- Digit 437 = 7
Also seen as
UTF-8 encoding: C6 B5 (2 bytes).
Code page 437 is IBM PC / OEM US — The original IBM PC code page (DOS).
Code pages are integer identifiers used by Windows and other systems to refer to specific character encodings.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.181.
- Address
- 0.0.1.181
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.1.181
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 437 is an active NANP area code (North American Numbering Plan).
- Primary area
- Toronto
- Region
- Ontario
- Country
- Canada
Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.