13839493 has 2 divisors, whose sum is σ = 13839494. Its totient is φ = 13839492.

The previous prime is 13839473. The next prime is 13839499. The reversal of 13839493 is 39493831.

13839493 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13704804 + 134689 = 3702^2 + 367^2 .

It is a cyclic number.

It is not a de Polignac number, because 13839493 - 2⁵ = 13839461 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13839499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6919746 + 6919747.

It is an arithmetic number, because the mean of its divisors is an integer number (6919747).

Almost surely, 2^13839493 is an apocalyptic number.

It is an amenable number.

13839493 is a deficient number, since it is larger than the sum of its proper divisors (1).

13839493 is an equidigital number, since it uses as much as digits as its factorization.

13839493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 40.

The square root of 13839493 is about 3720.1469057014. The cubic root of 13839493 is about 240.0896250912.

The spelling of 13839493 in words is "thirteen million, eight hundred thirty-nine thousand, four hundred ninety-three".