89915939 has 4 divisors (see below), whose sum is σ = 89946480. Its totient is φ = 89885400.

The previous prime is 89915929. The next prime is 89915951. The reversal of 89915939 is 93951998.

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 89915939 - 2¹⁶ = 89850403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89915929) 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, 10319 + ... + 16920.

It is an arithmetic number, because the mean of its divisors is an integer number (22486620).

Almost surely, 2^89915939 is an apocalyptic number.

89915939 is a deficient number, since it is larger than the sum of its proper divisors (30541).

89915939 is a wasteful number, since it uses less digits than its factorization.

89915939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30540.

The product of its digits is 787320, while the sum is 53.

The square root of 89915939 is about 9482.4015418036. The cubic root of 89915939 is about 448.0009084670. Note that the first 3 decimals are identical.

The spelling of 89915939 in words is "eighty-nine million, nine hundred fifteen thousand, nine hundred thirty-nine".