1,949
1,949 is a prime, odd, a calendar year.
1,949 (one thousand nine hundred forty-nine) is an odd 4-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in Roman numerals it is MCMXLIX and in binary, 11110011101.
Interestingness
Notable events — 1949 AD
- Apr 4 Twelve nations sign the North Atlantic Treaty, founding NATO.
- May 23 The Federal Republic of Germany (West Germany) is formally established.
- Aug 29 The Soviet Union conducts its first atomic bomb test.
- Oct 1 Mao Zedong proclaims the People's Republic of China in Beijing.
- Oct 7 The German Democratic Republic (East Germany) is established.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
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
- 52
- Started on
-
Saturday
January 1, 1949
- Ended on
-
Saturday
December 31, 1949
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 17
Sunday, April 17, 1949
- Decade
-
1940s
1940–1949
- Century
-
20th century
1901–2000
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
77
77 years before 2026.
In other calendars
- Hebrew
-
5709 / 5710 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1368 / 1369 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Ox
Sexagenary cycle position 26 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2492 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1327 / 1328 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1941 / 1942 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1871 / 1870 Saka
Indian national calendar; year starts in March.
- Japanese
-
Shōwa 24
Reign-era counting from the start of each emperor's reign.
Properties
Primality
1,949 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,949 = [44; (6, 1, 3, 1, 1, 3, 1, 6, 88)]
Period length 9 — the block in parentheses repeats forever.
Representations
- In words
- one thousand nine hundred forty-nine
- Ordinal
- 1949th
- Roman numeral
- MCMXLIX
- Binary
- 11110011101
- Octal
- 3635
- Hexadecimal
- 0x79D
- Base64
- B50=
- One's complement
- 63,586 (16-bit)
- Scientific notation
- 1.949 × 10³
- As a duration
- 1,949 s = 32 minutes, 29 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϡμθʹ
- Mayan (base 20)
- 𝋤·𝋱·𝋩
- Chinese
- 一千九百四十九
- Chinese (financial)
- 壹仟玖佰肆拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,949 = 2
- e — Euler's number (e)
- Digit 1,949 = 1
- φ — Golden ratio (φ)
- Digit 1,949 = 8
- √2 — Pythagoras's (√2)
- Digit 1,949 = 8
- ln 2 — Natural log of 2
- Digit 1,949 = 1
- γ — Euler-Mascheroni (γ)
- Digit 1,949 = 4
Also seen as
UTF-8 encoding: DE 9D (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.157.
- Address
- 0.0.7.157
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.157
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 1,949 Hz is closest to:
- Concert pitch (A4 = 440 Hz): B6 (1975.5 Hz, -23¢)
- Scientific pitch (C4 = 256 Hz): B6 (1933.1 Hz, +14¢)
- Baroque pitch (A4 = 415 Hz): C7 (1974.1 Hz, -22¢)
The digit sequence 1949 first appears in π at position 495 of the decimal expansion (the 495ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.