The number 4991 is written in Roman numerals like this: IVCMXCI
IVCMXCI = 4991
Above 3,999, a line over a numeral multiplies its value by 1,000.
4991 is written with IV under a line (4 × 1,000 = 4,000), followed by CMXCI (991).
4990 in Roman numerals: IVCMXC
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