Il numero romano MMMCDXC nel sistema decimale vale: 3490.
MMMCDXC in latino si scrive tria milia quadringenti nonaginta,
mentre in italiano tremilaquattrocentonovanta.
MMMCDLXXI, MMMCDLXXII, MMMCDLXXIII, MMMCDLXXIV, MMMCDLXXV, MMMCDLXXVI, MMMCDLXXVII, MMMCDLXXVIII, MMMCDLXXIX, MMMCDLXXX, MMMCDLXXXI, MMMCDLXXXII, MMMCDLXXXIII, MMMCDLXXXIV, MMMCDLXXXV, MMMCDLXXXVI, MMMCDLXXXVII, MMMCDLXXXVIII, MMMCDLXXXIX, MMMCDXCI, MMMCDXCII, MMMCDXCIII, MMMCDXCIV, MMMCDXCV, MMMCDXCVI, MMMCDXCVII, MMMCDXCVIII, MMMCDXCIX, MMMD, MMMDI, MMMDII, MMMDIII, MMMDIV, MMMDV, MMMDVI, MMMDVII, MMMDVIII, MMMDIX