Il numero romano MMDCCCXCVII nel sistema decimale vale: 2897.
MMDCCCXCVII in latino si scrive duo milia octingenti nonaginta septem,
mentre in italiano duemilaottocentonovantasette.
MMDCCCLXXVIII, MMDCCCLXXIX, MMDCCCLXXX, MMDCCCLXXXI, MMDCCCLXXXII, MMDCCCLXXXIII, MMDCCCLXXXIV, MMDCCCLXXXV, MMDCCCLXXXVI, MMDCCCLXXXVII, MMDCCCLXXXVIII, MMDCCCLXXXIX, MMDCCCXC, MMDCCCXCI, MMDCCCXCII, MMDCCCXCIII, MMDCCCXCIV, MMDCCCXCV, MMDCCCXCVI, MMDCCCXCVIII, MMDCCCXCIX, MMCM, MMCMI, MMCMII, MMCMIII, MMCMIV, MMCMV, MMCMVI, MMCMVII, MMCMVIII, MMCMIX, MMCMX, MMCMXI, MMCMXII, MMCMXIII, MMCMXIV, MMCMXV, MMCMXVI