1,899
1,899 is a composite number, odd, a calendar year.
Notable events — 1899 AD
- Feb 4 The Philippine-American War begins.
- May 18 The Hague Peace Conference opens to limit weapons of war.
- Oct 11 The Second Boer War begins in southern Africa.
- Mar 6 Bayer registers "Aspirin" as a trademark.
- Sep 6 US Secretary of State John Hay circulates the first Open Door note on China.
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
-
Sunday
January 1, 1899
- Ended on
-
Sunday
December 31, 1899
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Easter Sunday
-
April 2
Sunday, April 2, 1899
- Decade
-
1890s
1890–1899
- Century
-
19th century
1801–1900
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
127
127 years before 2026.
In other calendars
- Hebrew
-
5659 / 5660 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1316 / 1317 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Pig
Sexagenary cycle position 36 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2442 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1277 / 1278 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1891 / 1892 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1821 / 1820 Saka
Indian national calendar; year starts in March.
- Japanese
-
Meiji 32
Reign-era counting from the start of each emperor's reign.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 27
- Digit product
- 648
- Digital root
- 9
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 9,981
- Flips to (rotate 180°)
- 6,681
- Recamán's sequence
- a(7,946) = 1,899
- Square (n²)
- 3,606,201
- Cube (n³)
- 6,848,175,699
- Divisor count
- 6
- σ(n) — sum of divisors
- 2,756
- φ(n) — Euler's totient
- 1,260
- Sum of prime factors
- 217
Primality
Prime factorization: 3 2 × 211
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand eight hundred ninety-nine
- Ordinal
- 1899th
- Roman numeral
- MDCCCXCIX
- Binary
- 11101101011
- Octal
- 3553
- Hexadecimal
- 0x76B
- Base64
- B2s=
- One's complement
- 63,636 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αωϟθʹ
- Mayan (base 20)
- 𝋤·𝋮·𝋳
- Chinese
- 一千八百九十九
- Chinese (financial)
- 壹仟捌佰玖拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,899 = 8
- e — Euler's number (e)
- Digit 1,899 = 9
- φ — Golden ratio (φ)
- Digit 1,899 = 6
- √2 — Pythagoras's (√2)
- Digit 1,899 = 6
- ln 2 — Natural log of 2
- Digit 1,899 = 1
- γ — Euler-Mascheroni (γ)
- Digit 1,899 = 3
Also seen as
UTF-8 encoding: DD AB (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.107.
- Address
- 0.0.7.107
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.107
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1899 first appears in π at position 5,283 of the decimal expansion (the 5,283ordinal-suffix:rd 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.