897904 has 20 divisors (see below), whose sum is σ = 1988464. Its totient is φ = 384768.

The previous prime is 897899. The next prime is 897907. The reversal of 897904 is 409798.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3897 + ... + 4120.

2⁸⁹⁷⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

897904 is an abundant number, since it is smaller than the sum of its proper divisors (1090560).

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

897904 is a wasteful number, since it uses less digits than its factorization.

897904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8032 (or 8026 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 897904 is about 947.5779651300. The cubic root of 897904 is about 96.4739296180.

The spelling of 897904 in words is "eight hundred ninety-seven thousand, nine hundred four".