289 in Roman numerals is written as CCLXXXIX.
289 is built by adding these Roman numeral groups together:
Add them up: CC + L + XXX + IX = 289.
| Number | Roman numeral |
|---|---|
| 286 | CCLXXXVI |
| 287 | CCLXXXVII |
| 288 | CCLXXXVIII |
| 289 | CCLXXXIX |
| 290 | CCXC |
| 291 | CCXCI |
| 292 | CCXCII |
Roman numerals use seven letters, each with a fixed value: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, and M = 1000. Numbers are formed by combining these symbols and adding their values, working from the largest to the smallest.
When a smaller symbol appears before a larger one, it is subtracted instead of added — this is the subtractive rule. For example, IV is 4 (5 − 1) and IX is 9 (10 − 1). The same idea gives XL (40), XC (90), CD (400), and CM (900). The same symbol is never repeated more than three times in a row.
| Symbol | Value |
|---|---|
| I | 1 |
| V | 5 |
| X | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1,000 |