397064492 has 24 divisors (see below), whose sum is σ = 782487552. Its totient is φ = 174661200.

The previous prime is 397064471. The next prime is 397064509. The reversal of 397064492 is 294460793.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 144188 + ... + 146915.

It is an arithmetic number, because the mean of its divisors is an integer number (32603648).

Almost surely, 2^397064492 is an apocalyptic number.

It is an amenable number.

397064492 is a deficient number, since it is larger than the sum of its proper divisors (385423060).

397064492 is a wasteful number, since it uses less digits than its factorization.

397064492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291149 (or 291147 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 397064492 is about 19926.4771597992. The cubic root of 397064492 is about 734.9994551649. Note that the first 3 decimals are identical.

The spelling of 397064492 in words is "three hundred ninety-seven million, sixty-four thousand, four hundred ninety-two".