397089508 has 6 divisors (see below), whose sum is σ = 694906646. Its totient is φ = 198544752.

The previous prime is 397089487. The next prime is 397089521. The reversal of 397089508 is 805980793.

It can be written as a sum of positive squares in only one way, i.e., 372567204 + 24522304 = 19302^2 + 4952^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49636185 + ... + 49636192.

Almost surely, 2^397089508 is an apocalyptic number.

It is an amenable number.

397089508 is a deficient number, since it is larger than the sum of its proper divisors (297817138).

397089508 is a wasteful number, since it uses less digits than its factorization.

397089508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99272381 (or 99272379 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 397089508 is about 19927.1048574548. The cubic root of 397089508 is about 735.0148904075.

The spelling of 397089508 in words is "three hundred ninety-seven million, eighty-nine thousand, five hundred eight".