"CCCXLIX" is a Roman numeral that represents the number 349. In this numeral system, "CCC" stands for 300, "XL" represents 40, and "IX" signifies 9. When combined, these components add up to 349. Roman numerals are a numeral system originating from ancient Rome. They use combinations of letters from the Latin alphabet, specifically I, V, X, L, C, D, and M, to signify values. This system is still used today in various contexts, such as clock faces, book chapters, and movie titles.