13309739 has 2 divisors, whose sum is σ = 13309740. Its totient is φ = 13309738.

The previous prime is 13309729. The next prime is 13309771. The reversal of 13309739 is 93790331.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (93790331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13309739 - 2²⁰ = 12261163 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13309699 and 13309708.

It is not a weakly prime, because it can be changed into another prime (13309729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6654869 + 6654870.

It is an arithmetic number, because the mean of its divisors is an integer number (6654870).

Almost surely, 2^13309739 is an apocalyptic number.

13309739 is a deficient number, since it is larger than the sum of its proper divisors (1).

13309739 is an equidigital number, since it uses as much as digits as its factorization.

13309739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309, while the sum is 35.

The square root of 13309739 is about 3648.2514990061. The cubic root of 13309739 is about 236.9862668370.

The spelling of 13309739 in words is "thirteen million, three hundred nine thousand, seven hundred thirty-nine".