89977689 has 8 divisors (see below), whose sum is σ = 133300320. Its totient is φ = 59985108.

The previous prime is 89977687. The next prime is 89977703. The reversal of 89977689 is 98677998.

It is not a de Polignac number, because 89977689 - 2¹ = 89977687 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89977681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1666227 + ... + 1666280.

It is an arithmetic number, because the mean of its divisors is an integer number (16662540).

Almost surely, 2^89977689 is an apocalyptic number.

It is an amenable number.

89977689 is a deficient number, since it is larger than the sum of its proper divisors (43322631).

89977689 is a wasteful number, since it uses less digits than its factorization.

89977689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332516 (or 3332510 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 63.

The square root of 89977689 is about 9485.6570146722. The cubic root of 89977689 is about 448.1034402540.

The spelling of 89977689 in words is "eighty-nine million, nine hundred seventy-seven thousand, six hundred eighty-nine".