13859863 has 2 divisors, whose sum is σ = 13859864. Its totient is φ = 13859862.

The previous prime is 13859861. The next prime is 13859887. The reversal of 13859863 is 36895831.

13859863 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13859863 - 2¹ = 13859861 is a prime.

Together with 13859861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13859861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6929931 + 6929932.

It is an arithmetic number, because the mean of its divisors is an integer number (6929932).

Almost surely, 2^13859863 is an apocalyptic number.

13859863 is a deficient number, since it is larger than the sum of its proper divisors (1).

13859863 is an equidigital number, since it uses as much as digits as its factorization.

13859863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 13859863 is about 3722.8836941274. The cubic root of 13859863 is about 240.2073612964.

The spelling of 13859863 in words is "thirteen million, eight hundred fifty-nine thousand, eight hundred sixty-three".