89965791 has 12 divisors (see below), whose sum is σ = 131891032. Its totient is φ = 59081616.

The previous prime is 89965787. The next prime is 89965807. The reversal of 89965791 is 19756998.

It is not a de Polignac number, because 89965791 - 2² = 89965787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89965721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73996 + ... + 75201.

Almost surely, 2^89965791 is an apocalyptic number.

89965791 is a deficient number, since it is larger than the sum of its proper divisors (41925241).

89965791 is a wasteful number, since it uses less digits than its factorization.

89965791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149270 (or 149267 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 89965791 is about 9485.0298365372. The cubic root of 89965791 is about 448.0836880621.

The spelling of 89965791 in words is "eighty-nine million, nine hundred sixty-five thousand, seven hundred ninety-one".