13199209 has 2 divisors, whose sum is σ = 13199210. Its totient is φ = 13199208.

The previous prime is 13199189. The next prime is 13199213. The reversal of 13199209 is 90299131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8037225 + 5161984 = 2835^2 + 2272^2 .

It is a cyclic number.

It is not a de Polignac number, because 13199209 - 2⁵ = 13199177 is a prime.

It is not a weakly prime, because it can be changed into another prime (13199239) 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, 6599604 + 6599605.

It is an arithmetic number, because the mean of its divisors is an integer number (6599605).

Almost surely, 2^13199209 is an apocalyptic number.

It is an amenable number.

13199209 is a deficient number, since it is larger than the sum of its proper divisors (1).

13199209 is an equidigital number, since it uses as much as digits as its factorization.

13199209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 13199209 is about 3633.0715654939. The cubic root of 13199209 is about 236.3284293042.

The spelling of 13199209 in words is "thirteen million, one hundred ninety-nine thousand, two hundred nine".