89539521 has 16 divisors (see below), whose sum is σ = 123414720. Its totient is φ = 57712320.

The previous prime is 89539517. The next prime is 89539523. The reversal of 89539521 is 12593598.

It is not a de Polignac number, because 89539521 - 2² = 89539517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89539523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6651 + ... + 14943.

It is an arithmetic number, because the mean of its divisors is an integer number (7713420).

Almost surely, 2^89539521 is an apocalyptic number.

It is an amenable number.

89539521 is a deficient number, since it is larger than the sum of its proper divisors (33875199).

89539521 is a wasteful number, since it uses less digits than its factorization.

89539521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416.

The product of its digits is 97200, while the sum is 42.

The square root of 89539521 is about 9462.5324834317. The cubic root of 89539521 is about 447.3748738313.

The spelling of 89539521 in words is "eighty-nine million, five hundred thirty-nine thousand, five hundred twenty-one".