14857891 has 4 divisors (see below), whose sum is σ = 14919784. Its totient is φ = 14796000.

The previous prime is 14857877. The next prime is 14857901. The reversal of 14857891 is 19875841.

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: 19875841 = 23 ⋅864167.

It is a cyclic number.

It is not a de Polignac number, because 14857891 - 2¹⁷ = 14726819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14857811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30585 + ... + 31066.

It is an arithmetic number, because the mean of its divisors is an integer number (3729946).

Almost surely, 2^14857891 is an apocalyptic number.

14857891 is a deficient number, since it is larger than the sum of its proper divisors (61893).

14857891 is an equidigital number, since it uses as much as digits as its factorization.

14857891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61892.

The product of its digits is 80640, while the sum is 43.

The square root of 14857891 is about 3854.5934934828. The cubic root of 14857891 is about 245.8399106032.

The spelling of 14857891 in words is "fourteen million, eight hundred fifty-seven thousand, eight hundred ninety-one".