Il numero romano MCMLXXXVI nel sistema decimale vale: 1986.
MCMLXXXVI in latino si scrive mille nongenti octoginta sex,
mentre in italiano millenovecentottantasei.
MCMLXVII, MCMLXVIII, MCMLXIX, MCMLXX, MCMLXXI, MCMLXXII, MCMLXXIII, MCMLXXIV, MCMLXXV, MCMLXXVI, MCMLXXVII, MCMLXXVIII, MCMLXXIX, MCMLXXX, MCMLXXXI, MCMLXXXII, MCMLXXXIII, MCMLXXXIV, MCMLXXXV, MCMLXXXVII, MCMLXXXVIII, MCMLXXXIX, MCMXC, MCMXCI, MCMXCII, MCMXCIII, MCMXCIV, MCMXCV, MCMXCVI, MCMXCVII, MCMXCVIII, MCMXCIX, MM, MMI, MMII, MMIII, MMIV, MMV