1,947
1,947 is a composite number, odd, a calendar year.
Notable events — 1947 AD
- Apr 15 Jackie Robinson breaks Major League Baseball's color line with the Brooklyn Dodgers.
- Jun 5 The US announces the Marshall Plan to rebuild Europe.
- Aug 15 India and Pakistan gain independence from Britain in the largest mass migration in history.
- Oct 14 Chuck Yeager breaks the sound barrier in the Bell X-1.
- Nov 29 The UN votes to partition Palestine into Jewish and Arab states.
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
-
Wednesday
January 1, 1947
- Ended on
-
Wednesday
December 31, 1947
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 6
Sunday, April 6, 1947
- Decade
-
1940s
1940–1949
- Century
-
20th century
1901–2000
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
79
79 years before 2026.
In other calendars
- Hebrew
-
5707 / 5708 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1366 / 1367 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Fire zodiac:Pig
Sexagenary cycle position 24 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2490 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1325 / 1326 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1939 / 1940 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1869 / 1868 Saka
Indian national calendar; year starts in March.
- Japanese
-
Shōwa 22
Reign-era counting from the start of each emperor's reign.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 21
- Digit product
- 252
- Digital root
- 3
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 7,491
- Recamán's sequence
- a(3,857) = 1,947
- Square (n²)
- 3,790,809
- Cube (n³)
- 7,380,705,123
- Divisor count
- 8
- σ(n) — sum of divisors
- 2,880
- φ(n) — Euler's totient
- 1,160
- Sum of prime factors
- 73
Primality
Prime factorization: 3 × 11 × 59
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand nine hundred forty-seven
- Ordinal
- 1947th
- Roman numeral
- MCMXLVII
- Binary
- 11110011011
- Octal
- 3633
- Hexadecimal
- 0x79B
- Base64
- B5s=
- One's complement
- 63,588 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϡμζʹ
- Mayan (base 20)
- 𝋤·𝋱·𝋧
- Chinese
- 一千九百四十七
- Chinese (financial)
- 壹仟玖佰肆拾柒
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,947 = 1
- e — Euler's number (e)
- Digit 1,947 = 2
- φ — Golden ratio (φ)
- Digit 1,947 = 8
- √2 — Pythagoras's (√2)
- Digit 1,947 = 7
- ln 2 — Natural log of 2
- Digit 1,947 = 2
- γ — Euler-Mascheroni (γ)
- Digit 1,947 = 5
Also seen as
UTF-8 encoding: DE 9B (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.155.
- Address
- 0.0.7.155
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.155
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1947 first appears in π at position 2,054 of the decimal expansion (the 2,054ordinal-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.