12905699 has 2 divisors, whose sum is σ = 12905700. Its totient is φ = 12905698.

The previous prime is 12905689. The next prime is 12905701. The reversal of 12905699 is 99650921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12905699 - 2²⁰ = 11857123 is a prime.

It is a Sophie Germain prime.

Together with 12905701, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12905639) 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 as a sum of consecutive naturals, namely, 6452849 + 6452850.

It is an arithmetic number, because the mean of its divisors is an integer number (6452850).

Almost surely, 2^12905699 is an apocalyptic number.

12905699 is a deficient number, since it is larger than the sum of its proper divisors (1).

12905699 is an equidigital number, since it uses as much as digits as its factorization.

12905699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 12905699 is about 3592.4502780136. The cubic root of 12905699 is about 234.5635417753.

Adding to 12905699 its sum of digits (41), we get a triangular number (12905740 = T₅₀₈₀).

The spelling of 12905699 in words is "twelve million, nine hundred five thousand, six hundred ninety-nine".