Il numero romano MDCCCLXXXIV nel sistema decimale vale: 1884.
MDCCCLXXXIV in latino si scrive mille octingenti octoginta quattuor,
mentre in italiano milleottocentottantaquattro.
MDCCCLXV, MDCCCLXVI, MDCCCLXVII, MDCCCLXVIII, MDCCCLXIX, MDCCCLXX, MDCCCLXXI, MDCCCLXXII, MDCCCLXXIII, MDCCCLXXIV, MDCCCLXXV, MDCCCLXXVI, MDCCCLXXVII, MDCCCLXXVIII, MDCCCLXXIX, MDCCCLXXX, MDCCCLXXXI, MDCCCLXXXII, MDCCCLXXXIII, MDCCCLXXXV, MDCCCLXXXVI, MDCCCLXXXVII, MDCCCLXXXVIII, MDCCCLXXXIX, MDCCCXC, MDCCCXCI, MDCCCXCII, MDCCCXCIII, MDCCCXCIV, MDCCCXCV, MDCCCXCVI, MDCCCXCVII, MDCCCXCVIII, MDCCCXCIX, MCM, MCMI, MCMII, MCMIII