Il numero romano CCCXLIX nel sistema decimale vale: 349.
CCCXLIX in latino si scrive trecenti quadraginta novem,
mentre in italiano trecentoquarantanove.
CCCXXX, CCCXXXI, CCCXXXII, CCCXXXIII, CCCXXXIV, CCCXXXV, CCCXXXVI, CCCXXXVII, CCCXXXVIII, CCCXXXIX, CCCXL, CCCXLI, CCCXLII, CCCXLIII, CCCXLIV, CCCXLV, CCCXLVI, CCCXLVII, CCCXLVIII, CCCL, CCCLI, CCCLII, CCCLIII, CCCLIV, CCCLV, CCCLVI, CCCLVII, CCCLVIII, CCCLIX, CCCLX, CCCLXI, CCCLXII, CCCLXIII, CCCLXIV, CCCLXV, CCCLXVI, CCCLXVII, CCCLXVIII