13911863 has 8 divisors (see below), whose sum is σ = 15976320. Its totient is φ = 11866680.

The previous prime is 13911853. The next prime is 13911907. The reversal of 13911863 is 36811931.

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

It is not a de Polignac number, because 13911863 - 2⁴ = 13911847 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 (13911853) 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 7 ways as a sum of consecutive naturals, for example, 3233 + ... + 6186.

It is an arithmetic number, because the mean of its divisors is an integer number (1997040).

Almost surely, 2^13911863 is an apocalyptic number.

13911863 is a deficient number, since it is larger than the sum of its proper divisors (2064457).

13911863 is an equidigital number, since it uses as much as digits as its factorization.

13911863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9637.

The product of its digits is 3888, while the sum is 32.

The square root of 13911863 is about 3729.8609893668. The cubic root of 13911863 is about 240.5073929808.

The spelling of 13911863 in words is "thirteen million, nine hundred eleven thousand, eight hundred sixty-three".