13209191 has 2 divisors, whose sum is σ = 13209192. Its totient is φ = 13209190.

The previous prime is 13209179. The next prime is 13209211. The reversal of 13209191 is 19190231.

It is a weak prime.

It is an emirp because it is prime and its reverse (19190231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13209191 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13209191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13209101) 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, 6604595 + 6604596.

It is an arithmetic number, because the mean of its divisors is an integer number (6604596).

Almost surely, 2^13209191 is an apocalyptic number.

13209191 is a deficient number, since it is larger than the sum of its proper divisors (1).

13209191 is an equidigital number, since it uses as much as digits as its factorization.

13209191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 13209191 is about 3634.4450745609. The cubic root of 13209191 is about 236.3879893368.

The spelling of 13209191 in words is "thirteen million, two hundred nine thousand, one hundred ninety-one".