89977797 has 72 divisors (see below), whose sum is σ = 167329344. Its totient is φ = 47309184.

The previous prime is 89977781. The next prime is 89977831. The reversal of 89977797 is 79777998.

It is not a de Polignac number, because 89977797 - 2⁴ = 89977781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89977397) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 287313 + ... + 287625.

Almost surely, 2^89977797 is an apocalyptic number.

It is an amenable number.

89977797 is a deficient number, since it is larger than the sum of its proper divisors (77351547).

89977797 is a wasteful number, since it uses less digits than its factorization.

89977797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 336 counting only the distinct ones).

The product of its digits is 14002632, while the sum is 63.

The square root of 89977797 is about 9485.6627074760. The cubic root of 89977797 is about 448.1036195398.

The spelling of 89977797 in words is "eighty-nine million, nine hundred seventy-seven thousand, seven hundred ninety-seven".