13005109 has 4 divisors (see below), whose sum is σ = 14005516. Its totient is φ = 12004704.

The previous prime is 13005103. The next prime is 13005121. The reversal of 13005109 is 90150031.

13005109 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 4284900 + 8720209 = 2070^2 + 2953^2 .

It is a cyclic number.

It is not a de Polignac number, because 13005109 - 2⁹ = 13004597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13005103) 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, 500184 + ... + 500209.

It is an arithmetic number, because the mean of its divisors is an integer number (3501379).

Almost surely, 2^13005109 is an apocalyptic number.

It is an amenable number.

13005109 is a deficient number, since it is larger than the sum of its proper divisors (1000407).

13005109 is a wasteful number, since it uses less digits than its factorization.

13005109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000406.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 13005109 is about 3606.2596966941. The cubic root of 13005109 is about 235.1642672222.

The spelling of 13005109 in words is "thirteen million, five thousand, one hundred nine".