249 (number)

249 (two hundred [and] forty-nine) is the natural number following 248 and preceding 250.

Additionally, 249 is:

• a Blum integer.^[1]
• a semiprime.
• palindromic in bases 82 (33₈₂).
• a Harshad number in bases 3, 83, 84, 124, 167 and 247.
• the aliquot sum of any of these numbers: 375, 531, 1687, 4351, 7807, 12127, 14647 and 15151.
• part of the 3-aliquot tree. The aliquot sequence starting at 288 is: 288, 531, 249, 87, 33, 15, 9, 4, 3, 1, 0.