14143391 has 4 divisors (see below), whose sum is σ = 14887800. Its totient is φ = 13398984.

The previous prime is 14143369. The next prime is 14143427. The reversal of 14143391 is 19334141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19334141 = 211 ⋅91631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14143391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14143391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14143301) 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, 372176 + ... + 372213.

It is an arithmetic number, because the mean of its divisors is an integer number (3721950).

Almost surely, 2^14143391 is an apocalyptic number.

14143391 is a deficient number, since it is larger than the sum of its proper divisors (744409).

14143391 is an equidigital number, since it uses as much as digits as its factorization.

14143391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744408.

The product of its digits is 1296, while the sum is 26.

The square root of 14143391 is about 3760.7700009440. The cubic root of 14143391 is about 241.8342728446.

The spelling of 14143391 in words is "fourteen million, one hundred forty-three thousand, three hundred ninety-one".