Il numero romano MDCCLXXXIX nel sistema decimale vale: 1789.
MDCCLXXXIX in latino si scrive mille septingenti octoginta novem,
mentre in italiano millesettecentottantanove.
MDCCLXX, MDCCLXXI, MDCCLXXII, MDCCLXXIII, MDCCLXXIV, MDCCLXXV, MDCCLXXVI, MDCCLXXVII, MDCCLXXVIII, MDCCLXXIX, MDCCLXXX, MDCCLXXXI, MDCCLXXXII, MDCCLXXXIII, MDCCLXXXIV, MDCCLXXXV, MDCCLXXXVI, MDCCLXXXVII, MDCCLXXXVIII, MDCCXC, MDCCXCI, MDCCXCII, MDCCXCIII, MDCCXCIV, MDCCXCV, MDCCXCVI, MDCCXCVII, MDCCXCVIII, MDCCXCIX, MDCCC, MDCCCI, MDCCCII, MDCCCIII, MDCCCIV, MDCCCV, MDCCCVI, MDCCCVII, MDCCCVIII