12399888 has 20 divisors (see below), whose sum is σ = 32033168. Its totient is φ = 4133280.

The previous prime is 12399883. The next prime is 12399901. The reversal of 12399888 is 88899321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 258331 = 12399888 / (1 + 2 + 3 + 9 + 9 + 8 + 8 + 8).

It is not an unprimeable number, because it can be changed into a prime (12399883) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 129118 + ... + 129213.

Almost surely, 2^12399888 is an apocalyptic number.

It is an amenable number.

12399888 is an abundant number, since it is smaller than the sum of its proper divisors (19633280).

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

12399888 is a wasteful number, since it uses less digits than its factorization.

12399888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258342 (or 258336 counting only the distinct ones).

The product of its digits is 248832, while the sum is 48.

The square root of 12399888 is about 3521.3474693645. The cubic root of 12399888 is about 231.4582085850.

The spelling of 12399888 in words is "twelve million, three hundred ninety-nine thousand, eight hundred eighty-eight".