86972390 has 8 divisors (see below), whose sum is σ = 156550320. Its totient is φ = 34788952.

The previous prime is 86972387. The next prime is 86972401. The reversal of 86972390 is 9327968.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4348610 + ... + 4348629.

It is an arithmetic number, because the mean of its divisors is an integer number (19568790).

Almost surely, 2^86972390 is an apocalyptic number.

86972390 is a deficient number, since it is larger than the sum of its proper divisors (69577930).

86972390 is a wasteful number, since it uses less digits than its factorization.

86972390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8697246.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 86972390 is about 9325.8988842899. The cubic root of 86972390 is about 443.0578831774.

The spelling of 86972390 in words is "eighty-six million, nine hundred seventy-two thousand, three hundred ninety".