Il numero romano MCDXVII nel sistema decimale vale: 1417.
MCDXVII in latino si scrive mille quadringenti septemdecim,
mentre in italiano millequattrocentodiciassette.
MCCCXCVIII, MCCCXCIX, MCD, MCDI, MCDII, MCDIII, MCDIV, MCDV, MCDVI, MCDVII, MCDVIII, MCDIX, MCDX, MCDXI, MCDXII, MCDXIII, MCDXIV, MCDXV, MCDXVI, MCDXVIII, MCDXIX, MCDXX, MCDXXI, MCDXXII, MCDXXIII, MCDXXIV, MCDXXV, MCDXXVI, MCDXXVII, MCDXXVIII, MCDXXIX, MCDXXX, MCDXXXI, MCDXXXII, MCDXXXIII, MCDXXXIV, MCDXXXV, MCDXXXVI