397698392 has 32 divisors (see below), whose sum is σ = 917767200. Its totient is φ = 157330944.

The previous prime is 397698361. The next prime is 397698419. The reversal of 397698392 is 293896793.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272417 + ... + 273872.

It is an arithmetic number, because the mean of its divisors is an integer number (28680225).

Almost surely, 2^397698392 is an apocalyptic number.

It is an amenable number.

397698392 is an abundant number, since it is smaller than the sum of its proper divisors (520068808).

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

397698392 is a wasteful number, since it uses less digits than its factorization.

397698392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546315 (or 546311 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 56.

The square root of 397698392 is about 19942.3767891393. The cubic root of 397698392 is about 735.3903811092.

The spelling of 397698392 in words is "three hundred ninety-seven million, six hundred ninety-eight thousand, three hundred ninety-two".