89245921 has 4 divisors (see below), whose sum is σ = 89283844. Its totient is φ = 89208000.

The previous prime is 89245913. The next prime is 89245927. The reversal of 89245921 is 12954298.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5267025 + 83978896 = 2295^2 + 9164^2 .

It is a cyclic number.

It is not a de Polignac number, because 89245921 - 2³ = 89245913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89245927) 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, 15180 + ... + 20221.

It is an arithmetic number, because the mean of its divisors is an integer number (22320961).

Almost surely, 2^89245921 is an apocalyptic number.

It is an amenable number.

89245921 is a deficient number, since it is larger than the sum of its proper divisors (37923).

89245921 is a wasteful number, since it uses less digits than its factorization.

89245921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37922.

The product of its digits is 51840, while the sum is 40.

The square root of 89245921 is about 9447.0059278059. The cubic root of 89245921 is about 446.8853578117.

The spelling of 89245921 in words is "eighty-nine million, two hundred forty-five thousand, nine hundred twenty-one".