12399952 has 10 divisors (see below), whose sum is σ = 24024938. Its totient is φ = 6199968.

The previous prime is 12399941. The next prime is 12399973. The reversal of 12399952 is 25999321.

12399952 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9217296 + 3182656 = 3036^2 + 1784^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387483 + ... + 387514.

Almost surely, 2^12399952 is an apocalyptic number.

It is an amenable number.

12399952 is a deficient number, since it is larger than the sum of its proper divisors (11624986).

12399952 is an equidigital number, since it uses as much as digits as its factorization.

12399952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775005 (or 774999 counting only the distinct ones).

The product of its digits is 43740, while the sum is 40.

The square root of 12399952 is about 3521.3565567832. The cubic root of 12399952 is about 231.4586067956.

The spelling of 12399952 in words is "twelve million, three hundred ninety-nine thousand, nine hundred fifty-two".