13328009 has 2 divisors, whose sum is σ = 13328010. Its totient is φ = 13328008.

The previous prime is 13327999. The next prime is 13328033. The reversal of 13328009 is 90082331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10758400 + 2569609 = 3280^2 + 1603^2 .

It is a cyclic number.

It is not a de Polignac number, because 13328009 - 2⁸ = 13327753 is a prime.

It is not a weakly prime, because it can be changed into another prime (13328089) 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, 6664004 + 6664005.

It is an arithmetic number, because the mean of its divisors is an integer number (6664005).

Almost surely, 2^13328009 is an apocalyptic number.

It is an amenable number.

13328009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13328009 is an equidigital number, since it uses as much as digits as its factorization.

13328009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 13328009 is about 3650.7545795356. The cubic root of 13328009 is about 237.0946526211.

The spelling of 13328009 in words is "thirteen million, three hundred twenty-eight thousand, nine".