12399267 has 18 divisors (see below), whose sum is σ = 17612868. Its totient is φ = 7757928.

The previous prime is 12399253. The next prime is 12399271. The reversal of 12399267 is 76299321.

It is not a de Polignac number, because 12399267 - 2⁴ = 12399251 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12399067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 115828 + ... + 115934.

Almost surely, 2^12399267 is an apocalyptic number.

12399267 is a deficient number, since it is larger than the sum of its proper divisors (5213601).

12399267 is an equidigital number, since it uses as much as digits as its factorization.

12399267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 129 counting only the distinct ones).

The product of its digits is 40824, while the sum is 39.

The square root of 12399267 is about 3521.2592917875. The cubic root of 12399267 is about 231.4543446268.

The spelling of 12399267 in words is "twelve million, three hundred ninety-nine thousand, two hundred sixty-seven".