15909089 has 4 divisors (see below), whose sum is σ = 18181824. Its totient is φ = 13636356.

The previous prime is 15909079. The next prime is 15909151. The reversal of 15909089 is 98090951.

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 not a de Polignac number, because 15909089 - 2⁴ = 15909073 is a prime.

It is a super-2 number, since 2×15909089² = 506198225619842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15909029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1136357 + ... + 1136370.

It is an arithmetic number, because the mean of its divisors is an integer number (4545456).

Almost surely, 2^15909089 is an apocalyptic number.

It is an amenable number.

15909089 is a deficient number, since it is larger than the sum of its proper divisors (2272735).

15909089 is an equidigital number, since it uses as much as digits as its factorization.

15909089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272734.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 15909089 is about 3988.6199367701. The cubic root of 15909089 is about 251.5060503638.

The spelling of 15909089 in words is "fifteen million, nine hundred nine thousand, eighty-nine".