12399347 has 2 divisors, whose sum is σ = 12399348. Its totient is φ = 12399346.

The previous prime is 12399313. The next prime is 12399371. The reversal of 12399347 is 74399321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12399347 - 2⁸ = 12399091 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12399347.

It is not a weakly prime, because it can be changed into another prime (12399397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6199673 + 6199674.

It is an arithmetic number, because the mean of its divisors is an integer number (6199674).

Almost surely, 2^12399347 is an apocalyptic number.

12399347 is a deficient number, since it is larger than the sum of its proper divisors (1).

12399347 is an equidigital number, since it uses as much as digits as its factorization.

12399347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 38.

The square root of 12399347 is about 3521.2706513416. The cubic root of 12399347 is about 231.4548424064.

The spelling of 12399347 in words is "twelve million, three hundred ninety-nine thousand, three hundred forty-seven".