13069439 has 2 divisors, whose sum is σ = 13069440. Its totient is φ = 13069438.

The previous prime is 13069421. The next prime is 13069453. The reversal of 13069439 is 93496031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13069439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13069399 and 13069408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13069139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6534719 + 6534720.

It is an arithmetic number, because the mean of its divisors is an integer number (6534720).

Almost surely, 2^13069439 is an apocalyptic number.

13069439 is a deficient number, since it is larger than the sum of its proper divisors (1).

13069439 is an equidigital number, since it uses as much as digits as its factorization.

13069439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 13069439 is about 3615.1679075805. The cubic root of 13069439 is about 235.5513776981.

The spelling of 13069439 in words is "thirteen million, sixty-nine thousand, four hundred thirty-nine".