Il numero romano MCCLXXXIX nel sistema decimale vale: 1289.
MCCLXXXIX in latino si scrive mille ducenti octoginta novem,
mentre in italiano milleduecentottantanove.
MCCLXX, MCCLXXI, MCCLXXII, MCCLXXIII, MCCLXXIV, MCCLXXV, MCCLXXVI, MCCLXXVII, MCCLXXVIII, MCCLXXIX, MCCLXXX, MCCLXXXI, MCCLXXXII, MCCLXXXIII, MCCLXXXIV, MCCLXXXV, MCCLXXXVI, MCCLXXXVII, MCCLXXXVIII, MCCXC, MCCXCI, MCCXCII, MCCXCIII, MCCXCIV, MCCXCV, MCCXCVI, MCCXCVII, MCCXCVIII, MCCXCIX, MCCC, MCCCI, MCCCII, MCCCIII, MCCCIV, MCCCV, MCCCVI, MCCCVII, MCCCVIII