12739799 has 2 divisors, whose sum is σ = 12739800. Its totient is φ = 12739798.

The previous prime is 12739763. The next prime is 12739801. The reversal of 12739799 is 99793721.

12739799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12739799 is a prime.

It is a Sophie Germain prime.

Together with 12739801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12736799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6369899 + 6369900.

It is an arithmetic number, because the mean of its divisors is an integer number (6369900).

Almost surely, 2^12739799 is an apocalyptic number.

12739799 is a deficient number, since it is larger than the sum of its proper divisors (1).

12739799 is an equidigital number, since it uses as much as digits as its factorization.

12739799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 214326, while the sum is 47.

The square root of 12739799 is about 3569.2855027302. The cubic root of 12739799 is about 233.5541159704.

The spelling of 12739799 in words is "twelve million, seven hundred thirty-nine thousand, seven hundred ninety-nine".