12986599 has 2 divisors, whose sum is σ = 12986600. Its totient is φ = 12986598.

The previous prime is 12986581. The next prime is 12986609. The reversal of 12986599 is 99568921.

12986599 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (99568921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12986599 - 2¹⁷ = 12855527 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12986509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6493299 + 6493300.

It is an arithmetic number, because the mean of its divisors is an integer number (6493300).

Almost surely, 2^12986599 is an apocalyptic number.

12986599 is a deficient number, since it is larger than the sum of its proper divisors (1).

12986599 is an equidigital number, since it uses as much as digits as its factorization.

12986599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 49.

The square root of 12986599 is about 3603.6924119575. The cubic root of 12986599 is about 235.0526455163.

The spelling of 12986599 in words is "twelve million, nine hundred eighty-six thousand, five hundred ninety-nine".