14639421 has 4 divisors (see below), whose sum is σ = 19519232. Its totient is φ = 9759612.

The previous prime is 14639407. The next prime is 14639437. The reversal of 14639421 is 12493641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 14639421 - 2¹⁰ = 14638397 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 (14639321) 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, 2439901 + ... + 2439906.

It is an arithmetic number, because the mean of its divisors is an integer number (4879808).

Almost surely, 2^14639421 is an apocalyptic number.

It is an amenable number.

14639421 is a deficient number, since it is larger than the sum of its proper divisors (4879811).

14639421 is an equidigital number, since it uses as much as digits as its factorization.

14639421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4879810.

The product of its digits is 5184, while the sum is 30.

The square root of 14639421 is about 3826.1496311566. The cubic root of 14639421 is about 244.6290150946.

The spelling of 14639421 in words is "fourteen million, six hundred thirty-nine thousand, four hundred twenty-one".