15791089 has 2 divisors, whose sum is σ = 15791090. Its totient is φ = 15791088.

The previous prime is 15791023. The next prime is 15791099. The reversal of 15791089 is 98019751.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10112400 + 5678689 = 3180^2 + 2383^2 .

It is an emirp because it is prime and its reverse (98019751) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15791089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15791099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7895544 + 7895545.

It is an arithmetic number, because the mean of its divisors is an integer number (7895545).

Almost surely, 2^15791089 is an apocalyptic number.

It is an amenable number.

15791089 is a deficient number, since it is larger than the sum of its proper divisors (1).

15791089 is an equidigital number, since it uses as much as digits as its factorization.

15791089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 15791089 is about 3973.8003221098. The cubic root of 15791089 is about 250.8826877812.

The spelling of 15791089 in words is "fifteen million, seven hundred ninety-one thousand, eighty-nine".