12399892 has 12 divisors (see below), whose sum is σ = 21796180. Its totient is φ = 6172416.

The previous prime is 12399883. The next prime is 12399901. The reversal of 12399892 is 29899321.

12399892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12399883) and next prime (12399901).

It can be written as a sum of positive squares in 2 ways, for example, as 11861136 + 538756 = 3444^2 + 734^2 .

It is a super-2 number, since 2×12399892² = 307514643223328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5853 + ... + 7684.

Almost surely, 2^12399892 is an apocalyptic number.

It is an amenable number.

12399892 is a deficient number, since it is larger than the sum of its proper divisors (9396288).

12399892 is a wasteful number, since it uses less digits than its factorization.

12399892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13770 (or 13768 counting only the distinct ones).

The product of its digits is 69984, while the sum is 43.

The square root of 12399892 is about 3521.3480373289. The cubic root of 12399892 is about 231.4582334732.

The spelling of 12399892 in words is "twelve million, three hundred ninety-nine thousand, eight hundred ninety-two".