289 in Roman Numerals
289
CCLXXXI (subtracted)X
two hundred eighty-nine
How CCLXXXIX is formed
| Place | Value | Symbols |
|---|---|---|
| Hundreds | 200 | CC |
| Tens | 80 | LXXX |
| Units | 9 | I (subtracted)X |
| Total | 289 | CCLXXXIX |
CCLXXXIX is written one place at a time, from the largest to the smallest: CC (200) + LXXX (80) + IX (9) = 289.
IX is the only subtraction: the I before the X takes away 1, so IX = 9.
Common mistakes
Wrong: CCLXXXVIIII
Why isn't 289 written as CCLXXXVIIII?
A symbol can't be repeated four times in a row. 9 is IX (10 − 1), not VIIII, so 289 is CCLXXXIX.
Wrong: CCXXCIX
Why isn't 289 written as CCXXCIX?
Only one smaller symbol can stand before a larger one, so XXC doesn't work. 80 is LXXX (50 + 30), so 289 is CCLXXXIX.
Numbers near 289
Properties of 289
- Prime factors
- 17²
- Divisors
- 1, 17, 289
- Even or odd
- Odd
- Prime number
- No
- Letters in CCLXXXIX
- 8
289 is a perfect square: 17 × 17.
289,000 in Roman numerals
With a bar over it (vinculum), C̅C̅L̅X̅X̅X̅I̅X̅ means 289 × 1,000 = 289,000. How Roman numerals work