13893739 has 2 divisors, whose sum is σ = 13893740. Its totient is φ = 13893738.

The previous prime is 13893713. The next prime is 13893749. The reversal of 13893739 is 93739831.

It is a strong prime.

It is an emirp because it is prime and its reverse (93739831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13893739 - 2⁵ = 13893707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13893695 and 13893704.

It is not a weakly prime, because it can be changed into another prime (13893749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6946869 + 6946870.

It is an arithmetic number, because the mean of its divisors is an integer number (6946870).

Almost surely, 2^13893739 is an apocalyptic number.

13893739 is a deficient number, since it is larger than the sum of its proper divisors (1).

13893739 is an equidigital number, since it uses as much as digits as its factorization.

13893739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 43.

The square root of 13893739 is about 3727.4306163898. The cubic root of 13893739 is about 240.4029054109.

The spelling of 13893739 in words is "thirteen million, eight hundred ninety-three thousand, seven hundred thirty-nine".