12389656 has 16 divisors (see below), whose sum is σ = 23318640. Its totient is φ = 6171360.

The previous prime is 12389639. The next prime is 12389669. The reversal of 12389656 is 65698321.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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, 580 + ... + 5011.

It is an arithmetic number, because the mean of its divisors is an integer number (1457415).

Almost surely, 2^12389656 is an apocalyptic number.

It is an amenable number.

12389656 is a deficient number, since it is larger than the sum of its proper divisors (10928984).

12389656 is a wasteful number, since it uses less digits than its factorization.

12389656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5874 (or 5870 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 12389656 is about 3519.8943165953. The cubic root of 12389656 is about 231.3945270394.

The spelling of 12389656 in words is "twelve million, three hundred eighty-nine thousand, six hundred fifty-six".