Il numero romano MMDCCCLXXXIX nel sistema decimale vale: 2889.
MMDCCCLXXXIX in latino si scrive duo milia octingenti octoginta novem,
mentre in italiano duemilaottocentottantanove.
MMDCCCLXX, MMDCCCLXXI, MMDCCCLXXII, MMDCCCLXXIII, MMDCCCLXXIV, MMDCCCLXXV, MMDCCCLXXVI, MMDCCCLXXVII, MMDCCCLXXVIII, MMDCCCLXXIX, MMDCCCLXXX, MMDCCCLXXXI, MMDCCCLXXXII, MMDCCCLXXXIII, MMDCCCLXXXIV, MMDCCCLXXXV, MMDCCCLXXXVI, MMDCCCLXXXVII, MMDCCCLXXXVIII, MMDCCCXC, MMDCCCXCI, MMDCCCXCII, MMDCCCXCIII, MMDCCCXCIV, MMDCCCXCV, MMDCCCXCVI, MMDCCCXCVII, MMDCCCXCVIII, MMDCCCXCIX, MMCM, MMCMI, MMCMII, MMCMIII, MMCMIV, MMCMV, MMCMVI, MMCMVII, MMCMVIII