13911739 has 2 divisors, whose sum is σ = 13911740. Its totient is φ = 13911738.

The previous prime is 13911719. The next prime is 13911749. The reversal of 13911739 is 93711931.

It is a strong prime.

It is an emirp because it is prime and its reverse (93711931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13911739 - 2¹⁵ = 13878971 is a prime.

It is not a weakly prime, because it can be changed into another prime (13911719) 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, 6955869 + 6955870.

It is an arithmetic number, because the mean of its divisors is an integer number (6955870).

Almost surely, 2^13911739 is an apocalyptic number.

13911739 is a deficient number, since it is larger than the sum of its proper divisors (1).

13911739 is an equidigital number, since it uses as much as digits as its factorization.

13911739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5103, while the sum is 34.

The square root of 13911739 is about 3729.8443667263. The cubic root of 13911739 is about 240.5066784106.

It can be divided in two parts, 139 and 11739, that multiplied together give a triangular number (1631721 = T₁₈₀₆).

The spelling of 13911739 in words is "thirteen million, nine hundred eleven thousand, seven hundred thirty-nine".