397693296 has 480 divisors, whose sum is σ = 1559900160. Its totient is φ = 91238400.

The previous prime is 397693277. The next prime is 397693319. The reversal of 397693296 is 692396793.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4468420 + ... + 4468508.

It is an arithmetic number, because the mean of its divisors is an integer number (3249792).

Almost surely, 2^397693296 is an apocalyptic number.

397693296 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397693296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (779950080).

397693296 is an abundant number, since it is smaller than the sum of its proper divisors (1162206864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397693296 is a wasteful number, since it uses less digits than its factorization.

397693296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 156 counting only the distinct ones).

The product of its digits is 3306744, while the sum is 54.

The square root of 397693296 is about 19942.2490206095. The cubic root of 397693296 is about 735.3872400644.

The spelling of 397693296 in words is "three hundred ninety-seven million, six hundred ninety-three thousand, two hundred ninety-six".