89665039 has 4 divisors (see below), whose sum is σ = 89753040. Its totient is φ = 89577040.

The previous prime is 89665033. The next prime is 89665061. The reversal of 89665039 is 93056698.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89665039 - 2³ = 89665031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89665039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89665031) 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, 42454 + ... + 44515.

It is an arithmetic number, because the mean of its divisors is an integer number (22438260).

Almost surely, 2^89665039 is an apocalyptic number.

89665039 is a deficient number, since it is larger than the sum of its proper divisors (88001).

89665039 is a wasteful number, since it uses less digits than its factorization.

89665039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88000.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 89665039 is about 9469.1625289674. The cubic root of 89665039 is about 447.5838220893.

The spelling of 89665039 in words is "eighty-nine million, six hundred sixty-five thousand, thirty-nine".