13836909 has 4 divisors (see below), whose sum is σ = 18449216. Its totient is φ = 9224604.

The previous prime is 13836887. The next prime is 13836913. The reversal of 13836909 is 90963831.

13836909 is digitally balanced in base 2 and base 4, because in such bases 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 not a de Polignac number, because 13836909 - 2⁸ = 13836653 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 (13836709) 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, 2306149 + ... + 2306154.

It is an arithmetic number, because the mean of its divisors is an integer number (4612304).

Almost surely, 2^13836909 is an apocalyptic number.

It is an amenable number.

13836909 is a deficient number, since it is larger than the sum of its proper divisors (4612307).

13836909 is an equidigital number, since it uses as much as digits as its factorization.

13836909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612306.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 13836909 is about 3719.7995913759. The cubic root of 13836909 is about 240.0746816198.

The spelling of 13836909 in words is "thirteen million, eight hundred thirty-six thousand, nine hundred nine".