86972212 has 12 divisors (see below), whose sum is σ = 152530560. Its totient is φ = 43392056.

The previous prime is 86972209. The next prime is 86972213. The reversal of 86972212 is 21227968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86972213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21412 + ... + 25147.

It is an arithmetic number, because the mean of its divisors is an integer number (12710880).

Almost surely, 2^86972212 is an apocalyptic number.

It is an amenable number.

86972212 is a deficient number, since it is larger than the sum of its proper divisors (65558348).

86972212 is a wasteful number, since it uses less digits than its factorization.

86972212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47030 (or 47028 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 86972212 is about 9325.8893409690. The cubic root of 86972212 is about 443.0575809192.

The spelling of 86972212 in words is "eighty-six million, nine hundred seventy-two thousand, two hundred twelve".