89879239 has 4 divisors (see below), whose sum is σ = 93787056. Its totient is φ = 85971424.

The previous prime is 89879219. The next prime is 89879249. The reversal of 89879239 is 93297898.

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

It is not a de Polignac number, because 89879239 - 2²³ = 81490631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89879239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89879219) 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, 1953874 + ... + 1953919.

It is an arithmetic number, because the mean of its divisors is an integer number (23446764).

Almost surely, 2^89879239 is an apocalyptic number.

89879239 is a deficient number, since it is larger than the sum of its proper divisors (3907817).

89879239 is a wasteful number, since it uses less digits than its factorization.

89879239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907816.

The product of its digits is 1959552, while the sum is 55.

The square root of 89879239 is about 9480.4661805209. The cubic root of 89879239 is about 447.9399483044.

The spelling of 89879239 in words is "eighty-nine million, eight hundred seventy-nine thousand, two hundred thirty-nine".