13344509 has 4 divisors (see below), whose sum is σ = 13462716. Its totient is φ = 13226304.

The previous prime is 13344503. The next prime is 13344511. The reversal of 13344509 is 90544331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 225625 + 13118884 = 475^2 + 3622^2 .

It is a cyclic number.

It is not a de Polignac number, because 13344509 - 2⁴ = 13344493 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13344503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58934 + ... + 59159.

It is an arithmetic number, because the mean of its divisors is an integer number (3365679).

Almost surely, 2^13344509 is an apocalyptic number.

It is an amenable number.

13344509 is a deficient number, since it is larger than the sum of its proper divisors (118207).

13344509 is a wasteful number, since it uses less digits than its factorization.

13344509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118206.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 13344509 is about 3653.0136873546. The cubic root of 13344509 is about 237.1924528878.

The spelling of 13344509 in words is "thirteen million, three hundred forty-four thousand, five hundred nine".