14188891 has 4 divisors (see below), whose sum is σ = 14199112. Its totient is φ = 14178672.

The previous prime is 14188883. The next prime is 14188903. The reversal of 14188891 is 19888141.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 14188891 - 2³ = 14188883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14188831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2625 + ... + 5938.

It is an arithmetic number, because the mean of its divisors is an integer number (3549778).

Almost surely, 2^14188891 is an apocalyptic number.

14188891 is a deficient number, since it is larger than the sum of its proper divisors (10221).

14188891 is an equidigital number, since it uses as much as digits as its factorization.

14188891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10220.

The product of its digits is 18432, while the sum is 40.

The square root of 14188891 is about 3766.8144366294. The cubic root of 14188891 is about 242.0933262521.

The spelling of 14188891 in words is "fourteen million, one hundred eighty-eight thousand, eight hundred ninety-one".