89596991 has 12 divisors (see below), whose sum is σ = 99050952. Its totient is φ = 80982000.

The previous prime is 89596967. The next prime is 89597009. The reversal of 89596991 is 19969598.

It is a de Polignac number, because none of the positive numbers 2^k-89596991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89596961) 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, 19856 + ... + 23946.

It is an arithmetic number, because the mean of its divisors is an integer number (8254246).

Almost surely, 2^89596991 is an apocalyptic number.

89596991 is a deficient number, since it is larger than the sum of its proper divisors (9453961).

89596991 is a wasteful number, since it uses less digits than its factorization.

89596991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4294 (or 4283 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 56.

The square root of 89596991 is about 9465.5687098029. The cubic root of 89596991 is about 447.4705676470.

The spelling of 89596991 in words is "eighty-nine million, five hundred ninety-six thousand, nine hundred ninety-one".