14028639 has 4 divisors (see below), whose sum is σ = 18704856. Its totient is φ = 9352424.

The previous prime is 14028617. The next prime is 14028649. The reversal of 14028639 is 93682041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93682041 = 3 ⋅31227347.

It is a cyclic number.

It is not a de Polignac number, because 14028639 - 2¹¹ = 14026591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14028649) 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, 2338104 + ... + 2338109.

It is an arithmetic number, because the mean of its divisors is an integer number (4676214).

Almost surely, 2^14028639 is an apocalyptic number.

14028639 is a deficient number, since it is larger than the sum of its proper divisors (4676217).

14028639 is an equidigital number, since it uses as much as digits as its factorization.

14028639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4676216.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 14028639 is about 3745.4824789338. The cubic root of 14028639 is about 241.1784574926.

The spelling of 14028639 in words is "fourteen million, twenty-eight thousand, six hundred thirty-nine".