14391 has 16 divisors (see below), whose sum is σ = 23520. Its totient is φ = 8640.

The previous prime is 14389. The next prime is 14401. The reversal of 14391 is 19341.

14391 = 3³ + 4³ + ... + 15³.

It is not a de Polignac number, because 14391 - 2¹ = 14389 is a prime.

It is a Smith number, since the sum of its digits (18) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 14391.

It is not an unprimeable number, because it can be changed into a prime (14321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331 + ... + 371.

It is an arithmetic number, because the mean of its divisors is an integer number (1470).

2¹⁴³⁹¹ is an apocalyptic number.

14391 is a deficient number, since it is larger than the sum of its proper divisors (9129).

14391 is a wasteful number, since it uses less digits than its factorization.

14391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 57 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 14391 is about 119.9624941388. The cubic root of 14391 is about 24.3237384243.

Subtracting 14391 from its reverse (19341), we obtain a triangular number (4950 = T₉₉).

The spelling of 14391 in words is "fourteen thousand, three hundred ninety-one".