13609559 has 2 divisors, whose sum is σ = 13609560. Its totient is φ = 13609558.

The previous prime is 13609513. The next prime is 13609579. The reversal of 13609559 is 95590631.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13609559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13609579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6804779 + 6804780.

It is an arithmetic number, because the mean of its divisors is an integer number (6804780).

Almost surely, 2^13609559 is an apocalyptic number.

13609559 is a deficient number, since it is larger than the sum of its proper divisors (1).

13609559 is an equidigital number, since it uses as much as digits as its factorization.

13609559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 38.

The square root of 13609559 is about 3689.1135791678. The cubic root of 13609559 is about 238.7525493364.

The spelling of 13609559 in words is "thirteen million, six hundred nine thousand, five hundred fifty-nine".