Il numero romano MMMMCMLXXXIX nel sistema decimale vale: 4989.
MMMMCMLXXXIX in latino si scrive quattuor milia nongenti octoginta novem,
mentre in italiano quattromilanovecentottantanove.
MMMMCMLXX, MMMMCMLXXI, MMMMCMLXXII, MMMMCMLXXIII, MMMMCMLXXIV, MMMMCMLXXV, MMMMCMLXXVI, MMMMCMLXXVII, MMMMCMLXXVIII, MMMMCMLXXIX, MMMMCMLXXX, MMMMCMLXXXI, MMMMCMLXXXII, MMMMCMLXXXIII, MMMMCMLXXXIV, MMMMCMLXXXV, MMMMCMLXXXVI, MMMMCMLXXXVII, MMMMCMLXXXVIII, MMMMCMXC, MMMMCMXCI, MMMMCMXCII, MMMMCMXCIII, MMMMCMXCIV, MMMMCMXCV, MMMMCMXCVI, MMMMCMXCVII, MMMMCMXCVIII