15939089 has 4 divisors (see below), whose sum is σ = 15986724. Its totient is φ = 15891456.

The previous prime is 15939083. The next prime is 15939109. The reversal of 15939089 is 98093951.

15939089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4494400 + 11444689 = 2120^2 + 3383^2 .

It is a cyclic number.

It is not a de Polignac number, because 15939089 - 2¹² = 15934993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15939083) 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, 23312 + ... + 23985.

It is an arithmetic number, because the mean of its divisors is an integer number (3996681).

Almost surely, 2^15939089 is an apocalyptic number.

It is an amenable number.

15939089 is a deficient number, since it is larger than the sum of its proper divisors (47635).

15939089 is an equidigital number, since it uses as much as digits as its factorization.

15939089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47634.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 15939089 is about 3992.3788647873. The cubic root of 15939089 is about 251.6640406336.

The spelling of 15939089 in words is "fifteen million, nine hundred thirty-nine thousand, eighty-nine".