12439964 has 18 divisors (see below), whose sum is σ = 22761480. Its totient is φ = 5948536.

The previous prime is 12439951. The next prime is 12439969. The reversal of 12439964 is 46993421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12439969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 824 + ... + 5055.

Almost surely, 2^12439964 is an apocalyptic number.

It is an amenable number.

12439964 is a deficient number, since it is larger than the sum of its proper divisors (10321516).

12439964 is a wasteful number, since it uses less digits than its factorization.

12439964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5929 (or 5904 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 12439964 is about 3527.0333142742. The cubic root of 12439964 is about 231.7072953489.

The spelling of 12439964 in words is "twelve million, four hundred thirty-nine thousand, nine hundred sixty-four".