14540639 has 4 divisors (see below), whose sum is σ = 14616960. Its totient is φ = 14464320.

The previous prime is 14540633. The next prime is 14540641. The reversal of 14540639 is 93604541.

14540639 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93604541 = 4733 ⋅19777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14540639 is a prime.

It is a super-2 number, since 2×14540639² = 422860365056642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14540633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37874 + ... + 38255.

It is an arithmetic number, because the mean of its divisors is an integer number (3654240).

Almost surely, 2^14540639 is an apocalyptic number.

14540639 is a deficient number, since it is larger than the sum of its proper divisors (76321).

14540639 is an equidigital number, since it uses as much as digits as its factorization.

14540639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76320.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 14540639 is about 3813.2189813857. The cubic root of 14540639 is about 244.0775474647.

The spelling of 14540639 in words is "fourteen million, five hundred forty thousand, six hundred thirty-nine".