13056839 has 2 divisors, whose sum is σ = 13056840. Its totient is φ = 13056838.

The previous prime is 13056817. The next prime is 13056863. The reversal of 13056839 is 93865031.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13056839 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13056799 and 13056808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13052839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6528419 + 6528420.

It is an arithmetic number, because the mean of its divisors is an integer number (6528420).

Almost surely, 2^13056839 is an apocalyptic number.

13056839 is a deficient number, since it is larger than the sum of its proper divisors (1).

13056839 is an equidigital number, since it uses as much as digits as its factorization.

13056839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 13056839 is about 3613.4248297149. The cubic root of 13056839 is about 235.4756564767.

The spelling of 13056839 in words is "thirteen million, fifty-six thousand, eight hundred thirty-nine".