Il numero romano MDCXCVIII nel sistema decimale vale: 1698.
MDCXCVIII in latino si scrive mille sescenti nonaginta octo,
mentre in italiano milleseicentonovantotto.
MDCLXXIX, MDCLXXX, MDCLXXXI, MDCLXXXII, MDCLXXXIII, MDCLXXXIV, MDCLXXXV, MDCLXXXVI, MDCLXXXVII, MDCLXXXVIII, MDCLXXXIX, MDCXC, MDCXCI, MDCXCII, MDCXCIII, MDCXCIV, MDCXCV, MDCXCVI, MDCXCVII, MDCXCIX, MDCC, MDCCI, MDCCII, MDCCIII, MDCCIV, MDCCV, MDCCVI, MDCCVII, MDCCVIII, MDCCIX, MDCCX, MDCCXI, MDCCXII, MDCCXIII, MDCCXIV, MDCCXV, MDCCXVI, MDCCXVII