13288909 has 2 divisors, whose sum is σ = 13288910. Its totient is φ = 13288908.

The previous prime is 13288889. The next prime is 13288927. The reversal of 13288909 is 90988231.

13288909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12180100 + 1108809 = 3490^2 + 1053^2 .

It is a cyclic number.

It is not a de Polignac number, because 13288909 - 2⁹ = 13288397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13288939) 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, 6644454 + 6644455.

It is an arithmetic number, because the mean of its divisors is an integer number (6644455).

Almost surely, 2^13288909 is an apocalyptic number.

It is an amenable number.

13288909 is a deficient number, since it is larger than the sum of its proper divisors (1).

13288909 is an equidigital number, since it uses as much as digits as its factorization.

13288909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 13288909 is about 3645.3955889588. The cubic root of 13288909 is about 236.8625729169.

The spelling of 13288909 in words is "thirteen million, two hundred eighty-eight thousand, nine hundred nine".