89979456 has 56 divisors (see below), whose sum is σ = 272084800. Its totient is φ = 25708032.

The previous prime is 89979443. The next prime is 89979457. The reversal of 89979456 is 65497998.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 89979396 and 89979405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89979457) 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, 32131 + ... + 34818.

Almost surely, 2^89979456 is an apocalyptic number.

It is an amenable number.

89979456 is an abundant number, since it is smaller than the sum of its proper divisors (182105344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89979456 is a wasteful number, since it uses less digits than its factorization.

89979456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66971 (or 66961 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 57.

The square root of 89979456 is about 9485.7501548375. The cubic root of 89979456 is about 448.1063735501.

The spelling of 89979456 in words is "eighty-nine million, nine hundred seventy-nine thousand, four hundred fifty-six".