897190940 has 24 divisors (see below), whose sum is σ = 1884664320. Its totient is φ = 358769088.

The previous prime is 897190909. The next prime is 897190991. The reversal of 897190940 is 49091798.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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, 123941 + ... + 130979.

It is an arithmetic number, because the mean of its divisors is an integer number (78527680).

Almost surely, 2^897190940 is an apocalyptic number.

It is an amenable number.

897190940 is an abundant number, since it is smaller than the sum of its proper divisors (987473380).

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

897190940 is a wasteful number, since it uses less digits than its factorization.

897190940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13421 (or 13419 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 897190940 is about 29953.1457446459. The cubic root of 897190940 is about 964.4838497239.

The spelling of 897190940 in words is "eight hundred ninety-seven million, one hundred ninety thousand, nine hundred forty".