1,099
1,099 is a composite number, odd, a calendar year.
Notable events — 1099 AD
- Jul 15 Crusaders capture Jerusalem after a five-week siege.
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, 1099
- Ended on
-
Sunday
December 31, 1099
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
1090s
1090–1099
- Century
-
11th century
1001–1100
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
927
927 years before 2026.
In other calendars
- Hebrew
-
4859 / 4860 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
492 / 493 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Rabbit
Sexagenary cycle position 16 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1642 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
477 / 478 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1091 / 1092 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1021 / 1020 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 19
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 9,901
- Flips to (rotate 180°)
- 6,601
- Recamán's sequence
- a(1,974) = 1,099
- Square (n²)
- 1,207,801
- Cube (n³)
- 1,327,373,299
- Divisor count
- 4
- σ(n) — sum of divisors
- 1,264
- φ(n) — Euler's totient
- 936
- Sum of prime factors
- 164
Primality
Prime factorization: 7 × 157
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand ninety-nine
- Ordinal
- 1099th
- Roman numeral
- MXCIX
- Binary
- 10001001011
- Octal
- 2113
- Hexadecimal
- 0x44B
- Base64
- BEs=
- One's complement
- 64,436 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϟθʹ
- Mayan (base 20)
- 𝋢·𝋮·𝋳
- Chinese
- 一千零九十九
- Chinese (financial)
- 壹仟零玖拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,099 = 1
- e — Euler's number (e)
- Digit 1,099 = 8
- φ — Golden ratio (φ)
- Digit 1,099 = 7
- √2 — Pythagoras's (√2)
- Digit 1,099 = 1
- ln 2 — Natural log of 2
- Digit 1,099 = 4
- γ — Euler-Mascheroni (γ)
- Digit 1,099 = 1
Also seen as
UTF-8 encoding: D1 8B (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.75.
- Address
- 0.0.4.75
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.4.75
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1099 first appears in π at position 23,804 of the decimal expansion (the 23,804ordinal-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.