13189009 has 2 divisors, whose sum is σ = 13189010. Its totient is φ = 13189008.

The previous prime is 13188979. The next prime is 13189019. The reversal of 13189009 is 90098131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12054784 + 1134225 = 3472^2 + 1065^2 .

It is an emirp because it is prime and its reverse (90098131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13189009 - 2¹¹ = 13186961 is a prime.

It is not a weakly prime, because it can be changed into another prime (13189019) 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, 6594504 + 6594505.

It is an arithmetic number, because the mean of its divisors is an integer number (6594505).

Almost surely, 2^13189009 is an apocalyptic number.

It is an amenable number.

13189009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13189009 is an equidigital number, since it uses as much as digits as its factorization.

13189009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 13189009 is about 3631.6675233286. The cubic root of 13189009 is about 236.2675374942.

The spelling of 13189009 in words is "thirteen million, one hundred eighty-nine thousand, nine".