What does CCXLIX mean?

CCXLIX is the Roman numeral for 249 — 100 + 100 + 40 + 9.

How do you write 249 in Roman numerals?

Take the largest value that fits and repeat until nothing is left: C (100), then C (100), then XL (40), then IX (9). That gives CCXLIX.

249 in Roman numerals

CCXLIX

Number (1–3,999 for numerals)

Roman numeral

249 is written CCXLIX in Roman numerals. That is 4 symbol groups added together, reading left to right from the largest value down.

How it breaks down

CCXLIX = 100 + 100 + 40 + 9 = 249
Group	Value	Subtraction	Running total
C	100	—	100
C	100	—	200
XL	40	L − X	240
IX	9	X − I	249

Why the smaller symbol comes first

CCXLIX uses subtractive notation in 2 places: XL means L minus X, or 40; IX means X minus I, or 9. A smaller symbol placed before a larger one is subtracted from it rather than added, which is why IX is nine and not eleven.

Only six such pairs are valid — IV, IX, XL, XC, CD and CM. That restriction is what makes the notation unambiguous: IIII and IC both look like they should work, but neither is standard, and only one spelling of any number is correct.

The symbols

Symbol	Value	Used here
I	1	yes — 1×
V	5	no
X	10	yes — 2×
L	50	yes — 1×
C	100	yes — 2×
D	500	no
M	1,000	no

The same number, other ways

In words: Two hundred forty-nine
Roman numeral: CCXLIX
Symbol count: 6 characters
Binary: 11111001
Hexadecimal: F9

The numbers either side

Number	Roman numeral
247	CCXLVII
248	CCXLVIII
249	CCXLIX ←
250	CCL
251	CCLI

Common questions

What is 249 in Roman numerals?: 249 is CCXLIX.
What does CCXLIX mean?: CCXLIX is the Roman numeral for 249 — 100 + 100 + 40 + 9.
How do you write 249 in Roman numerals?: Take the largest value that fits and repeat until nothing is left: C (100), then C (100), then XL (40), then IX (9). That gives CCXLIX.

Sources

Calculated on this page — At One Place

How these figures are compiled and checked