13609009 has 8 divisors (see below), whose sum is σ = 13828320. Its totient is φ = 13391616.

The previous prime is 13608967. The next prime is 13609019. The reversal of 13609009 is 90090631.

It is a happy number.

13609009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13609009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13609019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20322 + ... + 20980.

It is an arithmetic number, because the mean of its divisors is an integer number (1728540).

Almost surely, 2^13609009 is an apocalyptic number.

It is an amenable number.

13609009 is a deficient number, since it is larger than the sum of its proper divisors (219311).

13609009 is a wasteful number, since it uses less digits than its factorization.

13609009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 13609009 is about 3689.0390347623. The cubic root of 13609009 is about 238.7493330756.

The spelling of 13609009 in words is "thirteen million, six hundred nine thousand, nine".