964
964 is a composite number, even, a calendar year.
964 (nine hundred sixty-four) is an even 3-digit number. It is a composite number with 6 divisors, and factors as 2² × 241. Written other ways, in Roman numerals it is CMLXIV and in binary, 1111000100.
Interestingness
Historical context — 964 AD
Calendar year
Year 964 (CMLXIV) was a leap year starting on Friday of the Julian calendar.
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Historical context — 964 BC
Decade
The 960s BC is a decade that lasted from 969 BC to 960 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
-
Sunday
January 1, 964
- Ended on
-
Monday
December 31, 964
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
960s
960–969
- Century
-
10th century
901–1000
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,062
1062 years before 2026.
In other calendars
- Hebrew
-
4724 / 4725 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
352 / 353 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
-
1507 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
342 / 343 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
956 / 957 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
886 / 885 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 2 × 241
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√964 = [31; (20, 1, 2, 6, 1, 1, 3, 1, 1, 1, 1, 11, 1, 4, 3, 1, 14, 1, 3, 4, 1, 11, 1, 1, …)]
Period length 34 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred sixty-four
- Ordinal
- 964th
- Roman numeral
- CMLXIV
- Binary
- 1111000100
- Octal
- 1704
- Hexadecimal
- 0x3C4
- Base64
- A8Q=
- One's complement
- 64,571 (16-bit)
- Scientific notation
- 9.64 × 10²
- As a duration
- 964 s = 16 minutes, 4 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ϡξδʹ
- Mayan (base 20)
- 𝋢·𝋨·𝋤
- Chinese
- 九百六十四
- Chinese (financial)
- 玖佰陸拾肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 964 = 1
- e — Euler's number (e)
- Digit 964 = 1
- φ — Golden ratio (φ)
- Digit 964 = 8
- √2 — Pythagoras's (√2)
- Digit 964 = 8
- ln 2 — Natural log of 2
- Digit 964 = 6
- γ — Euler-Mascheroni (γ)
- Digit 964 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 964, here are decompositions:
- 11 + 953 = 964
- 17 + 947 = 964
- 23 + 941 = 964
- 53 + 911 = 964
- 83 + 881 = 964
- 101 + 863 = 964
- 107 + 857 = 964
- 137 + 827 = 964
Showing the first eight; more decompositions exist.
UTF-8 encoding: CF 84 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.196.
- Address
- 0.0.3.196
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.3.196
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 964 Hz is closest to:
- Concert pitch (A4 = 440 Hz): B5 (987.8 Hz, -42¢)
- Scientific pitch (C4 = 256 Hz): B5 (966.5 Hz, -5¢)
- Baroque pitch (A4 = 415 Hz): C6 (987 Hz, -41¢)
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.