13838438 has 8 divisors (see below), whose sum is σ = 20777688. Its totient is φ = 6912544.

The previous prime is 13838437. The next prime is 13838449. The reversal of 13838438 is 83483831.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13838437) 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 3 ways as a sum of consecutive naturals, for example, 131 + ... + 5262.

It is an arithmetic number, because the mean of its divisors is an integer number (2597211).

Almost surely, 2^13838438 is an apocalyptic number.

13838438 is a deficient number, since it is larger than the sum of its proper divisors (6939250).

13838438 is a wasteful number, since it uses less digits than its factorization.

13838438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6678.

The product of its digits is 55296, while the sum is 38.

The square root of 13838438 is about 3720.0051075234. The cubic root of 13838438 is about 240.0835241695.

Subtracting from 13838438 its sum of digits (38), we obtain a square (13838400 = 3720²).

The spelling of 13838438 in words is "thirteen million, eight hundred thirty-eight thousand, four hundred thirty-eight".