13864891 has 2 divisors, whose sum is σ = 13864892. Its totient is φ = 13864890.

The previous prime is 13864867. The next prime is 13864919. The reversal of 13864891 is 19846831.

13864891 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 13864891 - 2¹⁵ = 13832123 is a prime.

It is not a weakly prime, because it can be changed into another prime (13864801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6932445 + 6932446.

It is an arithmetic number, because the mean of its divisors is an integer number (6932446).

Almost surely, 2^13864891 is an apocalyptic number.

13864891 is a deficient number, since it is larger than the sum of its proper divisors (1).

13864891 is an equidigital number, since it uses as much as digits as its factorization.

13864891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 13864891 is about 3723.5589158760. The cubic root of 13864891 is about 240.2364047916.

The spelling of 13864891 in words is "thirteen million, eight hundred sixty-four thousand, eight hundred ninety-one".