13994839 has 2 divisors, whose sum is σ = 13994840. Its totient is φ = 13994838.

The previous prime is 13994821. The next prime is 13994867. The reversal of 13994839 is 93849931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13994839 - 2⁵ = 13994807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13994339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6997419 + 6997420.

It is an arithmetic number, because the mean of its divisors is an integer number (6997420).

Almost surely, 2^13994839 is an apocalyptic number.

13994839 is a deficient number, since it is larger than the sum of its proper divisors (1).

13994839 is an equidigital number, since it uses as much as digits as its factorization.

13994839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 46.

The square root of 13994839 is about 3740.9676555672. The cubic root of 13994839 is about 240.9846067198.

The spelling of 13994839 in words is "thirteen million, nine hundred ninety-four thousand, eight hundred thirty-nine".