Number
1,089
1,089 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 18
- Digital root
- 9
- Palindrome
- No
- Divisor count
- 9
- σ(n) — sum of divisors
- 1,729
Primality
Prime factorization: 3 2 × 11 2
Divisors & multiples
Aliquot sum (sum of proper divisors):
640
First multiples
Representations
- In words
- one thousand eighty-nine
- Ordinal
- 1089th
- Roman numeral
- MLXXXIX
- Binary
- 10001000001
- Octal
- 2101
- Hexadecimal
- 441
Also seen as
Unicode codepoint
с
U+0441
Lowercase letter (Ll)
UTF-8 encoding: D1 81 (2 bytes).
Hex color
#000441
RGB(0, 4, 65)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.65.