49 in Roman Numerals
49 in Roman numerals is XLIX. It is built from two parts: 40 + 9 = XL + IX. Read it from left to right and add the values to get 49. Copy it below, see why it is written this way, and check the numbers before and after. The converter handles any number from 1 to 3,999.
49 in Roman numerals is XLIX.
49 in Roman numerals: the breakdown
| Place value | Numeral | Value |
|---|---|---|
| 40 | XL | 40 |
| 9 | IX | 9 |
| Total | XLIX | 49 |
40 plus 9 is 49, so XL followed by IX is XLIX.
Why XLIX and not IL?
XLIX uses the subtractive pairs XL and IX. Written by adding only, 49 would be XXXXVIIII, but a letter may repeat only three times in a row, and XXXXVIIII repeats X four times. The shortcut IL is also wrong: a smaller letter can be subtracted only from the next two larger letters: I before V or X, X before L or C, C before D or M.
How to read XLIX
- XL is 50 minus 10, which is 40.
- IX is 10 minus 1, which is 9.
- Add 40 + 9 to get 49.
The numbers around 49
Facts about 49
- 49 is an odd number.
- 49 is not prime: 49 = 7 x 7.
- 49 is a perfect square: 7 x 7 = 49.
- The digits of 49 add up to 13.
- XLIX is 4 letters long. It uses the symbols L, X and I.
Convert another number
49 = 40 + 9 = XL + IX
What number is XLIX?
XLIX is the number 49. Reading it from left to right, XL is 40 and IX is 9, which adds up to 49.
Questions and answers
What is 49 in Roman numerals?
49 in Roman numerals is XLIX. It is made of two parts: 40 + 9 = XL + IX. Read XLIX from left to right, add the parts, and you get 49. Use the converter on this page to check any other number from 1 to 3,999.
How do you write 49 in Roman numerals?
Split 49 into its place values, write each one in Roman numerals, and join them from largest to smallest. For 49 that is 40 + 9, which is XL + IX, so the answer is XLIX. Check that no letter repeats more than three times in a row.
What number is XLIX?
XLIX is 49. Read it in place-value parts from left to right: XL is 40, IX is 9. Add the parts to get 49. Letters after a larger or equal letter are added, and a smaller letter before a larger one is subtracted. You can also type XLIX into the converter to read the number back.
Why is 49 written XLIX and not IL?
XLIX is the standard form. IL breaks a rule: a smaller letter can be subtracted only from the next two larger letters: I before V or X, X before L or C, C before D or M. Writing XLIX keeps every letter within those limits and makes 49 easy to read at a glance.