Il numero romano MMMDCCC nel sistema decimale vale: 3800.
MMMDCCC in latino si scrive tria milia octingenti,
mentre in italiano tremilaottocento.
MMMDCCLXXXI, MMMDCCLXXXII, MMMDCCLXXXIII, MMMDCCLXXXIV, MMMDCCLXXXV, MMMDCCLXXXVI, MMMDCCLXXXVII, MMMDCCLXXXVIII, MMMDCCLXXXIX, MMMDCCXC, MMMDCCXCI, MMMDCCXCII, MMMDCCXCIII, MMMDCCXCIV, MMMDCCXCV, MMMDCCXCVI, MMMDCCXCVII, MMMDCCXCVIII, MMMDCCXCIX, MMMDCCCI, MMMDCCCII, MMMDCCCIII, MMMDCCCIV, MMMDCCCV, MMMDCCCVI, MMMDCCCVII, MMMDCCCVIII, MMMDCCCIX, MMMDCCCX, MMMDCCCXI, MMMDCCCXII, MMMDCCCXIII, MMMDCCCXIV, MMMDCCCXV, MMMDCCCXVI, MMMDCCCXVII, MMMDCCCXVIII, MMMDCCCXIX