Il numero romano CDXLIX nel sistema decimale vale: 449.
CDXLIX in latino si scrive quadringenti quadraginta novem,
mentre in italiano quattrocentoquarantanove.
CDXXX, CDXXXI, CDXXXII, CDXXXIII, CDXXXIV, CDXXXV, CDXXXVI, CDXXXVII, CDXXXVIII, CDXXXIX, CDXL, CDXLI, CDXLII, CDXLIII, CDXLIV, CDXLV, CDXLVI, CDXLVII, CDXLVIII, CDL, CDLI, CDLII, CDLIII, CDLIV, CDLV, CDLVI, CDLVII, CDLVIII, CDLIX, CDLX, CDLXI, CDLXII, CDLXIII, CDLXIV, CDLXV, CDLXVI, CDLXVII, CDLXVIII