189 in Roman Numerals
189
CLXXXI (subtracted)X
one hundred eighty-nine
How CLXXXIX is formed
| Place | Value | Symbols |
|---|---|---|
| Hundreds | 100 | C |
| Tens | 80 | LXXX |
| Units | 9 | I (subtracted)X |
| Total | 189 | CLXXXIX |
CLXXXIX is written one place at a time, from the largest to the smallest: C (100) + LXXX (80) + IX (9) = 189.
IX is the only subtraction: the I before the X takes away 1, so IX = 9.
Common mistakes
Wrong: CLXXXVIIII
Why isn't 189 written as CLXXXVIIII?
A symbol can't be repeated four times in a row. 9 is IX (10 − 1), not VIIII, so 189 is CLXXXIX.
Wrong: CXXCIX
Why isn't 189 written as CXXCIX?
Only one smaller symbol can stand before a larger one, so XXC doesn't work. 80 is LXXX (50 + 30), so 189 is CLXXXIX.
Numbers near 189
Properties of 189
- Prime factors
- 3³ × 7
- Divisors
- 1, 3, 7, 9, 21, 27, 63, 189
- Even or odd
- Odd
- Prime number
- No
- Letters in CLXXXIX
- 7
189,000 in Roman numerals
With a bar over it (vinculum), C̅L̅X̅X̅X̅I̅X̅ means 189 × 1,000 = 189,000. How Roman numerals work