It is a happy number.
It is a congruent number.
Almost surely, 2397689630 is an apocalyptic number.
397689630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
397689630 is a wasteful number, since it uses less digits than its factorization.
397689630 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1019740.
The square root of 397689630 is about 19942.1571049874. The cubic root of 397689630 is about 735.3849804187.
The spelling of 397689630 in words is "three hundred ninety-seven million, six hundred eighty-nine thousand, six hundred thirty".