890078972 has 6 divisors (see below), whose sum is σ = 1557638208. Its totient is φ = 445039484.

The previous prime is 890078971. The next prime is 890078989. The reversal of 890078972 is 279870098.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 890078972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890078971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111259868 + ... + 111259875.

It is an arithmetic number, because the mean of its divisors is an integer number (259606368).

Almost surely, 2^890078972 is an apocalyptic number.

It is an amenable number.

890078972 is a deficient number, since it is larger than the sum of its proper divisors (667559236).

890078972 is a wasteful number, since it uses less digits than its factorization.

890078972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222519747 (or 222519745 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 890078972 is about 29834.1913247200. The cubic root of 890078972 is about 961.9286213956.

It can be divided in two parts, 89007 and 8972, that added together give a palindrome (97979).

The spelling of 890078972 in words is "eight hundred ninety million, seventy-eight thousand, nine hundred seventy-two".