14321891 has 4 divisors (see below), whose sum is σ = 14334912. Its totient is φ = 14308872.

The previous prime is 14321873. The next prime is 14321903. The reversal of 14321891 is 19812341.

14321891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19812341 = 491 ⋅40351.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14321891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14321821) 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, 4691 + ... + 7116.

It is an arithmetic number, because the mean of its divisors is an integer number (3583728).

Almost surely, 2^14321891 is an apocalyptic number.

14321891 is a deficient number, since it is larger than the sum of its proper divisors (13021).

14321891 is a wasteful number, since it uses less digits than its factorization.

14321891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13020.

The product of its digits is 1728, while the sum is 29.

The square root of 14321891 is about 3784.4274335757. The cubic root of 14321891 is about 242.8473980766.

The spelling of 14321891 in words is "fourteen million, three hundred twenty-one thousand, eight hundred ninety-one".