12399697 has 2 divisors, whose sum is σ = 12399698. Its totient is φ = 12399696.

The previous prime is 12399683. The next prime is 12399727. The reversal of 12399697 is 79699321.

12399697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12173121 + 226576 = 3489^2 + 476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12399697 is a prime.

It is not a weakly prime, because it can be changed into another prime (12399637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6199848 + 6199849.

It is an arithmetic number, because the mean of its divisors is an integer number (6199849).

Almost surely, 2^12399697 is an apocalyptic number.

It is an amenable number.

12399697 is a deficient number, since it is larger than the sum of its proper divisors (1).

12399697 is an equidigital number, since it uses as much as digits as its factorization.

12399697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 46.

The square root of 12399697 is about 3521.3203489600. The cubic root of 12399697 is about 231.4570201671.

The spelling of 12399697 in words is "twelve million, three hundred ninety-nine thousand, six hundred ninety-seven".