13839563 has 4 divisors (see below), whose sum is σ = 13857480. Its totient is φ = 13821648.

The previous prime is 13839557. The next prime is 13839569. The reversal of 13839563 is 36593831.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13839557) and next prime (13839569).

It is a cyclic number.

It is not a de Polignac number, because 13839563 - 2⁶ = 13839499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13839569) 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, 7745 + ... + 9362.

It is an arithmetic number, because the mean of its divisors is an integer number (3464370).

Almost surely, 2^13839563 is an apocalyptic number.

13839563 is a deficient number, since it is larger than the sum of its proper divisors (17917).

13839563 is an equidigital number, since it uses as much as digits as its factorization.

13839563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17916.

The product of its digits is 58320, while the sum is 38.

The square root of 13839563 is about 3720.1563139202. The cubic root of 13839563 is about 240.0900298808.

The spelling of 13839563 in words is "thirteen million, eight hundred thirty-nine thousand, five hundred sixty-three".