412
412 is a composite number, even, a calendar year.
412 (four hundred twelve) is an even 3-digit number. It is a composite number with 6 divisors, and factors as 2² × 103. Written other ways, in Roman numerals it is CDXII and in binary, 110011100.
Interestingness
Historical context — 412 AD
Calendar year
Year 412 (CDXII) was a leap year starting on Monday of the Julian calendar.
Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →
Historical context — 412 BC
Calendar year
Year 412 BC was a year of the pre-Julian Roman calendar.
Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →
Year facts
- Year type
-
Leap year
Divisible by 4 and not by 100; February has 29 days.
- Days in year
- 366
- ISO weeks
- 52
- Started on
-
Sunday
January 1, 412
- Ended on
-
Monday
December 31, 412
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
410s
410–419
- Century
-
5th century
401–500
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,614
1614 years before 2026.
In other calendars
- Hebrew
-
4172 / 4173 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Water zodiac:Rat
Sexagenary cycle position 49 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
955 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
404 / 405 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
334 / 333 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 2 × 103
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√412 = [20; (3, 2, 1, 3, 1, 4, 3, 2, 13, 10, 13, 2, 3, 4, 1, 3, 1, 2, 3, 40)]
Period length 20 — the block in parentheses repeats forever.
Representations
- In words
- four hundred twelve
- Ordinal
- 412th
- Roman numeral
- CDXII
- Binary
- 110011100
- Octal
- 634
- Hexadecimal
- 0x19C
- Base64
- AZw=
- One's complement
- 65,123 (16-bit)
- Scientific notation
- 4.12 × 10²
- As a duration
- 412 s = 6 minutes, 52 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓎆𓏺𓏺
- Greek (Milesian)
- υιβʹ
- Mayan (base 20)
- 𝋡·𝋠·𝋬
- Chinese
- 四百一十二
- Chinese (financial)
- 肆佰壹拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 412 = 5
- e — Euler's number (e)
- Digit 412 = 5
- φ — Golden ratio (φ)
- Digit 412 = 9
- √2 — Pythagoras's (√2)
- Digit 412 = 0
- ln 2 — Natural log of 2
- Digit 412 = 7
- γ — Euler-Mascheroni (γ)
- Digit 412 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 412, here are decompositions:
- 3 + 409 = 412
- 11 + 401 = 412
- 23 + 389 = 412
- 29 + 383 = 412
- 53 + 359 = 412
- 59 + 353 = 412
- 101 + 311 = 412
- 131 + 281 = 412
Showing the first eight; more decompositions exist.
UTF-8 encoding: C6 9C (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.156.
- Address
- 0.0.1.156
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.1.156
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 412 is an active NANP area code (North American Numbering Plan).
- Primary area
- Pittsburgh
- Region
- Pennsylvania
- Country
- United States
Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.
Heard as a frequency, 412 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯4 (415.3 Hz, -14¢)
- Scientific pitch (C4 = 256 Hz): G♯4 (406.4 Hz, +24¢)
- Baroque pitch (A4 = 415 Hz): A4 (415 Hz, -13¢)
On an ingredients label, E412 is Guar gum, a thickener, stabiliser or emulsifier.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.