89870979 has 8 divisors (see below), whose sum is σ = 130721472. Its totient is φ = 54467240.

The previous prime is 89870951. The next prime is 89870981. The reversal of 89870979 is 97907898.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89870979 - 2⁹ = 89870467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89870939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1361649 + ... + 1361714.

It is an arithmetic number, because the mean of its divisors is an integer number (16340184).

Almost surely, 2^89870979 is an apocalyptic number.

89870979 is a deficient number, since it is larger than the sum of its proper divisors (40850493).

89870979 is a wasteful number, since it uses less digits than its factorization.

89870979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723377.

The product of its (nonzero) digits is 2286144, while the sum is 57.

The square root of 89870979 is about 9480.0305379255. The cubic root of 89870979 is about 447.9262258276.

The spelling of 89870979 in words is "eighty-nine million, eight hundred seventy thousand, nine hundred seventy-nine".