958

958 = 2 x 479.

958 is the number of 3-colorable graphs with 5 vertices (A084279).

958 is a Smith number (A006753); the sum of its digits equals the sum of the digits of its prime factors: 9 + 5 + 8 = 2 + 4 + 7 + 9 = 22.

958² = 917764 and 959² = 919681 have the same digit sum (A202089): 34.

Source: What's Special About This Number?