Il numero romano MMMDCCXCVIII nel sistema decimale vale: 3798.
MMMDCCXCVIII in latino si scrive tria milia septingenti nonaginta octo,
mentre in italiano tremilasettecentonovantotto.
MMMDCCLXXIX, MMMDCCLXXX, MMMDCCLXXXI, MMMDCCLXXXII, MMMDCCLXXXIII, MMMDCCLXXXIV, MMMDCCLXXXV, MMMDCCLXXXVI, MMMDCCLXXXVII, MMMDCCLXXXVIII, MMMDCCLXXXIX, MMMDCCXC, MMMDCCXCI, MMMDCCXCII, MMMDCCXCIII, MMMDCCXCIV, MMMDCCXCV, MMMDCCXCVI, MMMDCCXCVII, MMMDCCXCIX, MMMDCCC, MMMDCCCI, MMMDCCCII, MMMDCCCIII, MMMDCCCIV, MMMDCCCV, MMMDCCCVI, MMMDCCCVII, MMMDCCCVIII, MMMDCCCIX, MMMDCCCX, MMMDCCCXI, MMMDCCCXII, MMMDCCCXIII, MMMDCCCXIV, MMMDCCCXV, MMMDCCCXVI, MMMDCCCXVII