13323809 has 2 divisors, whose sum is σ = 13323810. Its totient is φ = 13323808.

The previous prime is 13323757. The next prime is 13323841. The reversal of 13323809 is 90832331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13140625 + 183184 = 3625^2 + 428^2 .

It is a cyclic number.

It is not a de Polignac number, because 13323809 - 2²⁰ = 12275233 is a prime.

It is not a weakly prime, because it can be changed into another prime (13323859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6661904 + 6661905.

It is an arithmetic number, because the mean of its divisors is an integer number (6661905).

Almost surely, 2^13323809 is an apocalyptic number.

It is an amenable number.

13323809 is a deficient number, since it is larger than the sum of its proper divisors (1).

13323809 is an equidigital number, since it uses as much as digits as its factorization.

13323809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 13323809 is about 3650.1793106641. The cubic root of 13323809 is about 237.0697451209.

The spelling of 13323809 in words is "thirteen million, three hundred twenty-three thousand, eight hundred nine".