13838209 has 8 divisors (see below), whose sum is σ = 17252928. Its totient is φ = 10782960.

The previous prime is 13838207. The next prime is 13838243. The reversal of 13838209 is 90283831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13838209 - 2¹ = 13838207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13838207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89782 + ... + 89935.

It is an arithmetic number, because the mean of its divisors is an integer number (2156616).

Almost surely, 2^13838209 is an apocalyptic number.

It is an amenable number.

13838209 is a deficient number, since it is larger than the sum of its proper divisors (3414719).

13838209 is a wasteful number, since it uses less digits than its factorization.

13838209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179735.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 13838209 is about 3719.9743278684. The cubic root of 13838209 is about 240.0821998526.

The spelling of 13838209 in words is "thirteen million, eight hundred thirty-eight thousand, two hundred nine".