Il numero romano MCXXXIX nel sistema decimale vale: 1139.
MCXXXIX in latino si scrive mille centum triginta novem,
mentre in italiano millecentotrentanove.
MCXX, MCXXI, MCXXII, MCXXIII, MCXXIV, MCXXV, MCXXVI, MCXXVII, MCXXVIII, MCXXIX, MCXXX, MCXXXI, MCXXXII, MCXXXIII, MCXXXIV, MCXXXV, MCXXXVI, MCXXXVII, MCXXXVIII, MCXL, MCXLI, MCXLII, MCXLIII, MCXLIV, MCXLV, MCXLVI, MCXLVII, MCXLVIII, MCXLIX, MCL, MCLI, MCLII, MCLIII, MCLIV, MCLV, MCLVI, MCLVII, MCLVIII