89715215 has 4 divisors (see below), whose sum is σ = 107658264. Its totient is φ = 71772168.

The previous prime is 89715193. The next prime is 89715221. The reversal of 89715215 is 51251798.

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

It is a cyclic number.

It is not a de Polignac number, because 89715215 - 2²⁴ = 72937999 is a prime.

It is a Duffinian number.

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, 8971517 + ... + 8971526.

It is an arithmetic number, because the mean of its divisors is an integer number (26914566).

Almost surely, 2^89715215 is an apocalyptic number.

89715215 is a deficient number, since it is larger than the sum of its proper divisors (17943049).

89715215 is a wasteful number, since it uses less digits than its factorization.

89715215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17943048.

The product of its digits is 25200, while the sum is 38.

The square root of 89715215 is about 9471.8116007446. The cubic root of 89715215 is about 447.6672948984.

The spelling of 89715215 in words is "eighty-nine million, seven hundred fifteen thousand, two hundred fifteen".