13886891 has 4 divisors (see below), whose sum is σ = 14617800. Its totient is φ = 13155984.

The previous prime is 13886881. The next prime is 13886897. The reversal of 13886891 is 19868831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19868831 = 653 ⋅30427.

It is a cyclic number.

It is not a de Polignac number, because 13886891 - 2⁶ = 13886827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13886897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365426 + ... + 365463.

It is an arithmetic number, because the mean of its divisors is an integer number (3654450).

Almost surely, 2^13886891 is an apocalyptic number.

13886891 is a deficient number, since it is larger than the sum of its proper divisors (730909).

13886891 is an equidigital number, since it uses as much as digits as its factorization.

13886891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730908.

The product of its digits is 82944, while the sum is 44.

The square root of 13886891 is about 3726.5119079375. The cubic root of 13886891 is about 240.3634020143.

The spelling of 13886891 in words is "thirteen million, eight hundred eighty-six thousand, eight hundred ninety-one".