13789439 has 2 divisors, whose sum is σ = 13789440. Its totient is φ = 13789438.

The previous prime is 13789417. The next prime is 13789441. The reversal of 13789439 is 93498731.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13789439 - 2¹⁶ = 13723903 is a prime.

Together with 13789441, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13789439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13789469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6894719 + 6894720.

It is an arithmetic number, because the mean of its divisors is an integer number (6894720).

Almost surely, 2^13789439 is an apocalyptic number.

13789439 is a deficient number, since it is larger than the sum of its proper divisors (1).

13789439 is an equidigital number, since it uses as much as digits as its factorization.

13789439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 13789439 is about 3713.4133893226. The cubic root of 13789439 is about 239.7998273048.

The spelling of 13789439 in words is "thirteen million, seven hundred eighty-nine thousand, four hundred thirty-nine".