13169609 has 2 divisors, whose sum is σ = 13169610. Its totient is φ = 13169608.

The previous prime is 13169591. The next prime is 13169657. The reversal of 13169609 is 90696131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13162384 + 7225 = 3628^2 + 85^2 .

It is an emirp because it is prime and its reverse (90696131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13169609 - 2¹² = 13165513 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13169809) 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, 6584804 + 6584805.

It is an arithmetic number, because the mean of its divisors is an integer number (6584805).

Almost surely, 2^13169609 is an apocalyptic number.

It is an amenable number.

13169609 is a deficient number, since it is larger than the sum of its proper divisors (1).

13169609 is an equidigital number, since it uses as much as digits as its factorization.

13169609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 13169609 is about 3628.9955910692. The cubic root of 13169609 is about 236.1516369633.

The spelling of 13169609 in words is "thirteen million, one hundred sixty-nine thousand, six hundred nine".