12089615 has 4 divisors (see below), whose sum is σ = 14507544. Its totient is φ = 9671688.

The previous prime is 12089611. The next prime is 12089633. The reversal of 12089615 is 51698021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51698021 = 151 ⋅342371.

It is a cyclic number.

It is not a de Polignac number, because 12089615 - 2² = 12089611 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 (12089611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208957 + ... + 1208966.

It is an arithmetic number, because the mean of its divisors is an integer number (3626886).

Almost surely, 2^12089615 is an apocalyptic number.

12089615 is a deficient number, since it is larger than the sum of its proper divisors (2417929).

12089615 is an equidigital number, since it uses as much as digits as its factorization.

12089615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417928.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 12089615 is about 3477.0123669610. The cubic root of 12089615 is about 229.5113443952.

The spelling of 12089615 in words is "twelve million, eighty-nine thousand, six hundred fifteen".