13839797 has 2 divisors, whose sum is σ = 13839798. Its totient is φ = 13839796.

The previous prime is 13839737. The next prime is 13839799. The reversal of 13839797 is 79793831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13830961 + 8836 = 3719^2 + 94^2 .

It is a cyclic number.

It is not a de Polignac number, because 13839797 - 2¹⁸ = 13577653 is a prime.

Together with 13839799, 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 (13839799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6919898 + 6919899.

It is an arithmetic number, because the mean of its divisors is an integer number (6919899).

Almost surely, 2^13839797 is an apocalyptic number.

It is an amenable number.

13839797 is a deficient number, since it is larger than the sum of its proper divisors (1).

13839797 is an equidigital number, since it uses as much as digits as its factorization.

13839797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 47.

The square root of 13839797 is about 3720.1877640786. The cubic root of 13839797 is about 240.0913830244.

The spelling of 13839797 in words is "thirteen million, eight hundred thirty-nine thousand, seven hundred ninety-seven".