8972231 has 4 divisors (see below), whose sum is σ = 9362352. Its totient is φ = 8582112.

The previous prime is 8972221. The next prime is 8972261. The reversal of 8972231 is 1322798.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8972231 is a prime.

It is a super-2 number, since 2×8972231² = 161001858234722, 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 (8972221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195026 + ... + 195071.

It is an arithmetic number, because the mean of its divisors is an integer number (2340588).

Almost surely, 2^8972231 is an apocalyptic number.

8972231 is a deficient number, since it is larger than the sum of its proper divisors (390121).

8972231 is a wasteful number, since it uses less digits than its factorization.

8972231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390120.

The product of its digits is 6048, while the sum is 32.

The square root of 8972231 is about 2995.3682578274. The cubic root of 8972231 is about 207.7942291322.

The spelling of 8972231 in words is "eight million, nine hundred seventy-two thousand, two hundred thirty-one".