13407809 has 4 divisors (see below), whose sum is σ = 13635120. Its totient is φ = 13180500.

The previous prime is 13407799. The next prime is 13407811. The reversal of 13407809 is 90870431.

13407809 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 13407809 - 2²⁰ = 12359233 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13407859) 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, 113567 + ... + 113684.

It is an arithmetic number, because the mean of its divisors is an integer number (3408780).

Almost surely, 2^13407809 is an apocalyptic number.

It is an amenable number.

13407809 is a deficient number, since it is larger than the sum of its proper divisors (227311).

13407809 is an equidigital number, since it uses as much as digits as its factorization.

13407809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227310.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 13407809 is about 3661.6675163100. The cubic root of 13407809 is about 237.5669041429.

The spelling of 13407809 in words is "thirteen million, four hundred seven thousand, eight hundred nine".