14387891 has 12 divisors (see below), whose sum is σ = 16691472. Its totient is φ = 12148704.

The previous prime is 14387873. The next prime is 14387897. The reversal of 14387891 is 19878341.

It is not a de Polignac number, because 14387891 - 2⁶ = 14387827 is a prime.

It is a super-2 number, since 2×14387891² = 414022814855762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14387897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83081 + ... + 83253.

It is an arithmetic number, because the mean of its divisors is an integer number (1390956).

Almost surely, 2^14387891 is an apocalyptic number.

14387891 is a deficient number, since it is larger than the sum of its proper divisors (2303581).

14387891 is an equidigital number, since it uses as much as digits as its factorization.

14387891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 289 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 14387891 is about 3793.1373558046. The cubic root of 14387891 is about 243.2198668252.

The spelling of 14387891 in words is "fourteen million, three hundred eighty-seven thousand, eight hundred ninety-one".