14140391 has 4 divisors (see below), whose sum is σ = 14225232. Its totient is φ = 14055552.

The previous prime is 14140387. The next prime is 14140393. The reversal of 14140391 is 19304141.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 14140391 - 2² = 14140387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14140393) 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, 42170 + ... + 42503.

It is an arithmetic number, because the mean of its divisors is an integer number (3556308).

Almost surely, 2^14140391 is an apocalyptic number.

14140391 is a deficient number, since it is larger than the sum of its proper divisors (84841).

14140391 is an equidigital number, since it uses as much as digits as its factorization.

14140391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84840.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 14140391 is about 3760.3711253013. The cubic root of 14140391 is about 241.8171728879.

The spelling of 14140391 in words is "fourteen million, one hundred forty thousand, three hundred ninety-one".