89391879 has 12 divisors (see below), whose sum is σ = 133287232. Its totient is φ = 57672000.

The previous prime is 89391857. The next prime is 89391917. The reversal of 89391879 is 97819398.

It is not a de Polignac number, because 89391879 - 2⁸ = 89391623 is a prime.

It is a super-3 number, since 3×89391879³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89391829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159922 + ... + 160479.

Almost surely, 2^89391879 is an apocalyptic number.

89391879 is a deficient number, since it is larger than the sum of its proper divisors (43895353).

89391879 is a wasteful number, since it uses less digits than its factorization.

89391879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320438 (or 320435 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 89391879 is about 9454.7278649361. The cubic root of 89391879 is about 447.1288459405.

The spelling of 89391879 in words is "eighty-nine million, three hundred ninety-one thousand, eight hundred seventy-nine".