CXXXIX

CXXXIX is the Roman numeral representation of the number 139. In Roman numerals, "C" signifies 100, "XXX" represents 30, and "IX" stands for 9, which together sum to 139. Roman numerals have been used since ancient Rome for various purposes, including numbering, dates, and other forms of enumeration.

Historically, the numeral CXXXIX appears in various contexts such as historical documents, inscriptions, and classical literature. In modern times, Roman numerals are primarily used for stylistic or traditional purposes, such as in the enumeration of monarchs, popes, events, and in certain academic or decorative contexts.

The numeral CXXXIX is constructed by combining the symbols as follows: C (100), XXX (30), and IX (9), which do not require subtractive notation beyond IX. The form reflects classical Roman numeral syntax, where smaller numerals placed before larger numerals indicate subtraction, as in IX (9).

While Roman numerals are largely ceremonial today, they continue to be used in specific fields, such as clock faces, book chapters, and sporting event ordinal designations. The notation CXXXIX is a typical example of combining Roman numerals to express the number 139 in a compact and traditional format.