13072739 has 2 divisors, whose sum is σ = 13072740. Its totient is φ = 13072738.

The previous prime is 13072699. The next prime is 13072757. The reversal of 13072739 is 93727031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13072739 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13072789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6536369 + 6536370.

It is an arithmetic number, because the mean of its divisors is an integer number (6536370).

Almost surely, 2^13072739 is an apocalyptic number.

13072739 is a deficient number, since it is larger than the sum of its proper divisors (1).

13072739 is an equidigital number, since it uses as much as digits as its factorization.

13072739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 13072739 is about 3615.6242891097. The cubic root of 13072739 is about 235.5712014036.

The spelling of 13072739 in words is "thirteen million, seventy-two thousand, seven hundred thirty-nine".