13936891 has 2 divisors, whose sum is σ = 13936892. Its totient is φ = 13936890.

The previous prime is 13936883. The next prime is 13936913. The reversal of 13936891 is 19863931.

13936891 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 13936891 - 2³ = 13936883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13936841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6968445 + 6968446.

It is an arithmetic number, because the mean of its divisors is an integer number (6968446).

Almost surely, 2^13936891 is an apocalyptic number.

13936891 is a deficient number, since it is larger than the sum of its proper divisors (1).

13936891 is an equidigital number, since it uses as much as digits as its factorization.

13936891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 40.

The square root of 13936891 is about 3733.2145665632. The cubic root of 13936891 is about 240.6515340616.

The spelling of 13936891 in words is "thirteen million, nine hundred thirty-six thousand, eight hundred ninety-one".