12399396 has 24 divisors (see below), whose sum is σ = 29000160. Its totient is φ = 4123392.

The previous prime is 12399383. The next prime is 12399397. The reversal of 12399396 is 69399321.

It is a happy number.

12399396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12399397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5620 + ... + 7508.

It is an arithmetic number, because the mean of its divisors is an integer number (1208340).

Almost surely, 2^12399396 is an apocalyptic number.

It is an amenable number.

12399396 is an abundant number, since it is smaller than the sum of its proper divisors (16600764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12399396 is a wasteful number, since it uses less digits than its factorization.

12399396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443 (or 2441 counting only the distinct ones).

The product of its digits is 78732, while the sum is 42.

The square root of 12399396 is about 3521.2776090504. The cubic root of 12399396 is about 231.4551472954.

The spelling of 12399396 in words is "twelve million, three hundred ninety-nine thousand, three hundred ninety-six".