12399368 has 8 divisors (see below), whose sum is σ = 23248830. Its totient is φ = 6199680.

The previous prime is 12399347. The next prime is 12399371. The reversal of 12399368 is 86399321.

It can be written as a sum of positive squares in only one way, i.e., 7300804 + 5098564 = 2702^2 + 2258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 774953 + ... + 774968.

Almost surely, 2^12399368 is an apocalyptic number.

It is an amenable number.

12399368 is a deficient number, since it is larger than the sum of its proper divisors (10849462).

12399368 is a wasteful number, since it uses less digits than its factorization.

12399368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549927 (or 1549923 counting only the distinct ones).

The product of its digits is 69984, while the sum is 41.

The square root of 12399368 is about 3521.2736332185. The cubic root of 12399368 is about 231.4549730732.

The spelling of 12399368 in words is "twelve million, three hundred ninety-nine thousand, three hundred sixty-eight".