89791589 has 4 divisors (see below), whose sum is σ = 90663456. Its totient is φ = 88919724.

The previous prime is 89791577. The next prime is 89791601. The reversal of 89791589 is 98519798.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (89791577) and next prime (89791601).

It is a cyclic number.

It is not a de Polignac number, because 89791589 - 2¹⁶ = 89726053 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 (89791529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435779 + ... + 435984.

It is an arithmetic number, because the mean of its divisors is an integer number (22665864).

Almost surely, 2^89791589 is an apocalyptic number.

It is an amenable number.

89791589 is a deficient number, since it is larger than the sum of its proper divisors (871867).

89791589 is a wasteful number, since it uses less digits than its factorization.

89791589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871866.

The product of its digits is 1632960, while the sum is 56.

The square root of 89791589 is about 9475.8423899936. The cubic root of 89791589 is about 447.7942909886.

The spelling of 89791589 in words is "eighty-nine million, seven hundred ninety-one thousand, five hundred eighty-nine".