Il numero romano MMDXC nel sistema decimale vale: 2590.
MMDXC in latino si scrive duo milia quingenti nonaginta,
mentre in italiano duemilacinquecentonovanta.
MMDLXXI, MMDLXXII, MMDLXXIII, MMDLXXIV, MMDLXXV, MMDLXXVI, MMDLXXVII, MMDLXXVIII, MMDLXXIX, MMDLXXX, MMDLXXXI, MMDLXXXII, MMDLXXXIII, MMDLXXXIV, MMDLXXXV, MMDLXXXVI, MMDLXXXVII, MMDLXXXVIII, MMDLXXXIX, MMDXCI, MMDXCII, MMDXCIII, MMDXCIV, MMDXCV, MMDXCVI, MMDXCVII, MMDXCVIII, MMDXCIX, MMDC, MMDCI, MMDCII, MMDCIII, MMDCIV, MMDCV, MMDCVI, MMDCVII, MMDCVIII, MMDCIX