Il numero romano MMCMLXXXIX nel sistema decimale vale: 2989.
MMCMLXXXIX in latino si scrive duo milia nongenti octoginta novem,
mentre in italiano duemilanovecentottantanove.
MMCMLXX, MMCMLXXI, MMCMLXXII, MMCMLXXIII, MMCMLXXIV, MMCMLXXV, MMCMLXXVI, MMCMLXXVII, MMCMLXXVIII, MMCMLXXIX, MMCMLXXX, MMCMLXXXI, MMCMLXXXII, MMCMLXXXIII, MMCMLXXXIV, MMCMLXXXV, MMCMLXXXVI, MMCMLXXXVII, MMCMLXXXVIII, MMCMXC, MMCMXCI, MMCMXCII, MMCMXCIII, MMCMXCIV, MMCMXCV, MMCMXCVI, MMCMXCVII, MMCMXCVIII, MMCMXCIX, MMM, MMMI, MMMII, MMMIII, MMMIV, MMMV, MMMVI, MMMVII, MMMVIII