89618939 has 4 divisors (see below), whose sum is σ = 89728656. Its totient is φ = 89509224.

The previous prime is 89618933. The next prime is 89618941. The reversal of 89618939 is 93981698.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89618939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89618933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53624 + ... + 55269.

It is an arithmetic number, because the mean of its divisors is an integer number (22432164).

Almost surely, 2^89618939 is an apocalyptic number.

89618939 is a deficient number, since it is larger than the sum of its proper divisors (109717).

89618939 is a wasteful number, since it uses less digits than its factorization.

89618939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109716.

The product of its digits is 839808, while the sum is 53.

The square root of 89618939 is about 9466.7279986276. The cubic root of 89618939 is about 447.5071026618.

The spelling of 89618939 in words is "eighty-nine million, six hundred eighteen thousand, nine hundred thirty-nine".