89659964979 has 24 divisors (see below), whose sum is σ = 147675239712. Its totient is φ = 51929752320.

The previous prime is 89659964971. The next prime is 89659965019. The reversal of 89659964979 is 97946995698.

It is not a de Polignac number, because 89659964979 - 2³ = 89659964971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89659964898 and 89659964907.

It is not an unprimeable number, because it can be changed into a prime (89659964971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22536967 + ... + 22540944.

It is an arithmetic number, because the mean of its divisors is an integer number (6153134988).

Almost surely, 2^89659964979 is an apocalyptic number.

89659964979 is a deficient number, since it is larger than the sum of its proper divisors (58015274733).

89659964979 is a wasteful number, since it uses less digits than its factorization.

89659964979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45077947 (or 45077944 counting only the distinct ones).

The product of its digits is 2380855680, while the sum is 81.

The spelling of 89659964979 in words is "eighty-nine billion, six hundred fifty-nine million, nine hundred sixty-four thousand, nine hundred seventy-nine".