13299609 has 4 divisors (see below), whose sum is σ = 17732816. Its totient is φ = 8866404.

The previous prime is 13299581. The next prime is 13299617. The reversal of 13299609 is 90699231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13299609 - 2⁵ = 13299577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13299619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216599 + ... + 2216604.

It is an arithmetic number, because the mean of its divisors is an integer number (4433204).

Almost surely, 2^13299609 is an apocalyptic number.

It is an amenable number.

13299609 is a deficient number, since it is larger than the sum of its proper divisors (4433207).

13299609 is an equidigital number, since it uses as much as digits as its factorization.

13299609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4433206.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 13299609 is about 3646.8628984375. The cubic root of 13299609 is about 236.9261284129.

The spelling of 13299609 in words is "thirteen million, two hundred ninety-nine thousand, six hundred nine".