Il numero romano MDCXXXIV nel sistema decimale vale: 1634.
MDCXXXIV in latino si scrive mille sescenti triginta quattuor,
mentre in italiano milleseicentotrentaquattro.
MDCXV, MDCXVI, MDCXVII, MDCXVIII, MDCXIX, MDCXX, MDCXXI, MDCXXII, MDCXXIII, MDCXXIV, MDCXXV, MDCXXVI, MDCXXVII, MDCXXVIII, MDCXXIX, MDCXXX, MDCXXXI, MDCXXXII, MDCXXXIII, MDCXXXV, MDCXXXVI, MDCXXXVII, MDCXXXVIII, MDCXXXIX, MDCXL, MDCXLI, MDCXLII, MDCXLIII, MDCXLIV, MDCXLV, MDCXLVI, MDCXLVII, MDCXLVIII, MDCXLIX, MDCL, MDCLI, MDCLII, MDCLIII