890442172 has 6 divisors (see below), whose sum is σ = 1558273808. Its totient is φ = 445221084.

The previous prime is 890442149. The next prime is 890442181. The reversal of 890442172 is 271244098.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111305268 + ... + 111305275.

Almost surely, 2^890442172 is an apocalyptic number.

It is an amenable number.

890442172 is a deficient number, since it is larger than the sum of its proper divisors (667831636).

890442172 is a wasteful number, since it uses less digits than its factorization.

890442172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222610547 (or 222610545 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 890442172 is about 29840.2776796732. The cubic root of 890442172 is about 962.0594431077.

It can be divided in two parts, 8904 and 42172, that added together give a square (51076 = 226²).

The spelling of 890442172 in words is "eight hundred ninety million, four hundred forty-two thousand, one hundred seventy-two".