14081391 has 8 divisors (see below), whose sum is σ = 20861360. Its totient is φ = 9387576.

The previous prime is 14081387. The next prime is 14081401. The reversal of 14081391 is 19318041.

It is not a de Polignac number, because 14081391 - 2² = 14081387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 521533 = 14081391 / (1 + 4 + 0 + 8 + 1 + 3 + 9 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14081311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260740 + ... + 260793.

It is an arithmetic number, because the mean of its divisors is an integer number (2607670).

Almost surely, 2^14081391 is an apocalyptic number.

14081391 is a deficient number, since it is larger than the sum of its proper divisors (6779969).

14081391 is an equidigital number, since it uses as much as digits as its factorization.

14081391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521542 (or 521536 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 14081391 is about 3752.5179546539. The cubic root of 14081391 is about 241.4803811075.

The spelling of 14081391 in words is "fourteen million, eighty-one thousand, three hundred ninety-one".