CCCXC

CCCXC is the Roman numeral for the number 390. It is formed by combining CCC (300) and XC (90); the subtractive principle places XC before a larger value to indicate 90, yielding 390 in total.

In calendar notation, CCCXC denotes the year 390 CE in the Julian calendar. The year is historically noted for events in the later Roman Empire, including imperial actions in response to civil unrest. In 390, Emperor Theodosius I ordered severe punishment after a riot in Thessalonica, an incident often cited in discussions of the limits of imperial authority and the relationship between the state and Christian communities in late antiquity. The broader 4th century context also featured the establishment of Nicene Christianity as the empire’s official faith and ongoing political-religious transformation.

Beyond history, CCCXC appears in inscriptions, manuscripts, and any system that uses Roman numerals to indicate sequence or year. While Roman numerals are less common in everyday use today, CCCXC remains a valid representation in scholarly, ceremonial, or stylistic contexts that preserve traditional numbering.

In summary, CCCXC denotes 390 in the Roman numeral system and can designate a year, a sequence position, or an inscriptional date, depending on the context. See also Roman numerals for related notation and historical chronology.