844
844 is a composite number, even, a calendar year.
844 (eight hundred forty-four) is an even 3-digit number. It is a composite number with 6 divisors, and factors as 2² × 211. Written other ways, in Roman numerals it is DCCCXLIV and in binary, 1101001100.
Interestingness
Historical context — 844 AD
Calendar year
Year 844 (DCCCXLIV) was a leap year starting on Tuesday of the Julian calendar.
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Historical context — 844 BC
Decade
This article concerns the period 849 BC – 840 BC.
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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
-
Friday
January 1, 844
- Ended on
-
Saturday
December 31, 844
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
840s
840–849
- Century
-
9th century
801–900
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,182
1182 years before 2026.
In other calendars
- Hebrew
-
4604 / 4605 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
229 / 230 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Wood zodiac:Rat
Sexagenary cycle position 1 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1387 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
222 / 223 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
836 / 837 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
766 / 765 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 2 × 211
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√844 = [29; (19, 2, 1, 5, 1, 3, 1, 1, 1, 1, 1, 2, 6, 1, 7, 2, 3, 2, 2, 11, 4, 1, 3, 14, …)]
Period length 48 — the block in parentheses repeats forever.
Representations
- In words
- eight hundred forty-four
- Ordinal
- 844th
- Roman numeral
- DCCCXLIV
- Binary
- 1101001100
- Octal
- 1514
- Hexadecimal
- 0x34C
- Base64
- A0w=
- One's complement
- 64,691 (16-bit)
- Scientific notation
- 8.44 × 10²
- As a duration
- 844 s = 14 minutes, 4 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ωμδʹ
- Mayan (base 20)
- 𝋢·𝋢·𝋤
- Chinese
- 八百四十四
- Chinese (financial)
- 捌佰肆拾肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 844 = 1
- e — Euler's number (e)
- Digit 844 = 4
- φ — Golden ratio (φ)
- Digit 844 = 2
- √2 — Pythagoras's (√2)
- Digit 844 = 2
- ln 2 — Natural log of 2
- Digit 844 = 0
- γ — Euler-Mascheroni (γ)
- Digit 844 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 844, here are decompositions:
- 5 + 839 = 844
- 17 + 827 = 844
- 23 + 821 = 844
- 47 + 797 = 844
- 71 + 773 = 844
- 83 + 761 = 844
- 101 + 743 = 844
- 167 + 677 = 844
Showing the first eight; more decompositions exist.
UTF-8 encoding: CD 8C (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.76.
- Address
- 0.0.3.76
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.3.76
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 844 is an active NANP area code (North American Numbering Plan).
- Primary area
- Toll-free
- Region
- (special)
- Country
- North America
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, 844 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯5 (830.6 Hz, +28¢)
- Scientific pitch (C4 = 256 Hz): A5 (861.1 Hz, -35¢)
- Baroque pitch (A4 = 415 Hz): A5 (830 Hz, +29¢)
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.