97971392 has 14 divisors (see below), whose sum is σ = 194412108. Its totient is φ = 48985664.

The previous prime is 97971389. The next prime is 97971397. The reversal of 97971392 is 29317979.

It is not an unprimeable number, because it can be changed into a prime (97971397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765338 + ... + 765465.

Almost surely, 2^97971392 is an apocalyptic number.

It is an amenable number.

97971392 is a deficient number, since it is larger than the sum of its proper divisors (96440716).

97971392 is a wasteful number, since it uses less digits than its factorization.

97971392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530815 (or 1530805 counting only the distinct ones).

The product of its digits is 214326, while the sum is 47.

The square root of 97971392 is about 9898.0499089467. The cubic root of 97971392 is about 460.9987624719.

The spelling of 97971392 in words is "ninety-seven million, nine hundred seventy-one thousand, three hundred ninety-two".