12399275 has 12 divisors (see below), whose sum is σ = 17571792. Its totient is φ = 8502240.

The previous prime is 12399271. The next prime is 12399293. The reversal of 12399275 is 57299321.

It is not a de Polignac number, because 12399275 - 2² = 12399271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12399271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35252 + ... + 35601.

It is an arithmetic number, because the mean of its divisors is an integer number (1464316).

Almost surely, 2^12399275 is an apocalyptic number.

12399275 is a deficient number, since it is larger than the sum of its proper divisors (5172517).

12399275 is an equidigital number, since it uses as much as digits as its factorization.

12399275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70870 (or 70865 counting only the distinct ones).

The product of its digits is 34020, while the sum is 38.

The square root of 12399275 is about 3521.2604277446. The cubic root of 12399275 is about 231.4543944048.

The spelling of 12399275 in words is "twelve million, three hundred ninety-nine thousand, two hundred seventy-five".