13838647 has 4 divisors (see below), whose sum is σ = 14160520. Its totient is φ = 13516776.

The previous prime is 13838641. The next prime is 13838651. The reversal of 13838647 is 74683831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74683831 = 2671 ⋅27961.

It is a cyclic number.

It is not a de Polignac number, because 13838647 - 2⁷ = 13838519 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 (13838641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160872 + ... + 160957.

It is an arithmetic number, because the mean of its divisors is an integer number (3540130).

Almost surely, 2^13838647 is an apocalyptic number.

13838647 is a deficient number, since it is larger than the sum of its proper divisors (321873).

13838647 is an equidigital number, since it uses as much as digits as its factorization.

13838647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321872.

The product of its digits is 96768, while the sum is 40.

The square root of 13838647 is about 3720.0331987766. The cubic root of 13838647 is about 240.0847328128.

The spelling of 13838647 in words is "thirteen million, eight hundred thirty-eight thousand, six hundred forty-seven".