12089915 has 4 divisors (see below), whose sum is σ = 14507904. Its totient is φ = 9671928.

The previous prime is 12089899. The next prime is 12089929. The reversal of 12089915 is 51998021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51998021 = 971 ⋅53551.

It is a cyclic number.

It is not a de Polignac number, because 12089915 - 2⁴ = 12089899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208987 + ... + 1208996.

It is an arithmetic number, because the mean of its divisors is an integer number (3626976).

Almost surely, 2^12089915 is an apocalyptic number.

12089915 is a deficient number, since it is larger than the sum of its proper divisors (2417989).

12089915 is an equidigital number, since it uses as much as digits as its factorization.

12089915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417988.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 12089915 is about 3477.0555071785. The cubic root of 12089915 is about 229.5132427968.

The spelling of 12089915 in words is "twelve million, eighty-nine thousand, nine hundred fifteen".