13863913 has 12 divisors (see below), whose sum is σ = 16649472. Its totient is φ = 11498760.

The previous prime is 13863911. The next prime is 13863923. The reversal of 13863913 is 31936831.

It is not a de Polignac number, because 13863913 - 2¹ = 13863911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13863911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3045 + ... + 6082.

It is an arithmetic number, because the mean of its divisors is an integer number (1387456).

Almost surely, 2^13863913 is an apocalyptic number.

It is an amenable number.

13863913 is a deficient number, since it is larger than the sum of its proper divisors (2785559).

13863913 is an equidigital number, since it uses as much as digits as its factorization.

13863913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9172 (or 9165 counting only the distinct ones).

The product of its digits is 11664, while the sum is 34.

The square root of 13863913 is about 3723.4275875865. The cubic root of 13863913 is about 240.2307560700.

The spelling of 13863913 in words is "thirteen million, eight hundred sixty-three thousand, nine hundred thirteen".