13727839 has 2 divisors, whose sum is σ = 13727840. Its totient is φ = 13727838.

The previous prime is 13727837. The next prime is 13727873. The reversal of 13727839 is 93872731.

It is a weak prime.

It is an emirp because it is prime and its reverse (93872731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13727839 - 2¹ = 13727837 is a prime.

Together with 13727837, 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 (13727837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6863919 + 6863920.

It is an arithmetic number, because the mean of its divisors is an integer number (6863920).

Almost surely, 2^13727839 is an apocalyptic number.

13727839 is a deficient number, since it is larger than the sum of its proper divisors (1).

13727839 is an equidigital number, since it uses as much as digits as its factorization.

13727839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 13727839 is about 3705.1098499235. The cubic root of 13727839 is about 239.4422173964.

The spelling of 13727839 in words is "thirteen million, seven hundred twenty-seven thousand, eight hundred thirty-nine".