13008909 has 4 divisors (see below), whose sum is σ = 17345216. Its totient is φ = 8672604.

The previous prime is 13008883. The next prime is 13008913. The reversal of 13008909 is 90980031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90980031 = 3 ⋅30326677.

It is not a de Polignac number, because 13008909 - 2⁷ = 13008781 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13008929) 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, 2168149 + ... + 2168154.

It is an arithmetic number, because the mean of its divisors is an integer number (4336304).

Almost surely, 2^13008909 is an apocalyptic number.

It is an amenable number.

13008909 is a deficient number, since it is larger than the sum of its proper divisors (4336307).

13008909 is an equidigital number, since it uses as much as digits as its factorization.

13008909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4336306.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 13008909 is about 3606.7865198817. The cubic root of 13008909 is about 235.1871694317.

The spelling of 13008909 in words is "thirteen million, eight thousand, nine hundred nine".