108865589 has 4 divisors (see below), whose sum is σ = 124417824. Its totient is φ = 93313356.

The previous prime is 108865579. The next prime is 108865591. The reversal of 108865589 is 985568801.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108865589 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 (108865529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7776107 + ... + 7776120.

It is an arithmetic number, because the mean of its divisors is an integer number (31104456).

Almost surely, 2^108865589 is an apocalyptic number.

It is an amenable number.

108865589 is a deficient number, since it is larger than the sum of its proper divisors (15552235).

108865589 is an equidigital number, since it uses as much as digits as its factorization.

108865589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15552234.

The product of its (nonzero) digits is 691200, while the sum is 50.

The square root of 108865589 is about 10433.8674037962. The cubic root of 108865589 is about 477.4891880998.

The spelling of 108865589 in words is "one hundred eight million, eight hundred sixty-five thousand, five hundred eighty-nine".