897959431 has 8 divisors (see below), whose sum is σ = 953231760. Its totient is φ = 842959488.

The previous prime is 897959369. The next prime is 897959449. The reversal of 897959431 is 134959798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897959431 is a prime.

It is a super-2 number, since 2×897959431² = 1612662279443687522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897959471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61281 + ... + 74506.

It is an arithmetic number, because the mean of its divisors is an integer number (119153970).

Almost surely, 2^897959431 is an apocalyptic number.

897959431 is a deficient number, since it is larger than the sum of its proper divisors (55272329).

897959431 is a wasteful number, since it uses less digits than its factorization.

897959431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136193.

The product of its digits is 2449440, while the sum is 55.

The square root of 897959431 is about 29965.9712173659. The cubic root of 897959431 is about 964.7591481028.

The spelling of 897959431 in words is "eight hundred ninety-seven million, nine hundred fifty-nine thousand, four hundred thirty-one".