MCDLXIV is a Roman numeral that represents the number 1464. In this numeral, "M" stands for 1000, "CD" represents 400, "LX" stands for 60, and "IV" signifies 4. When combined, these values add up to 1464. 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 was widely used throughout the Roman Empire and is still seen today in various contexts, such as clock faces and book chapters.