14440421 has 4 divisors (see below), whose sum is σ = 14747712. Its totient is φ = 14133132.

The previous prime is 14440409. The next prime is 14440457. The reversal of 14440421 is 12404441.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 14440421 - 2⁶ = 14440357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 14440393 and 14440402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14440121) 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, 153575 + ... + 153668.

It is an arithmetic number, because the mean of its divisors is an integer number (3686928).

Almost surely, 2^14440421 is an apocalyptic number.

It is an amenable number.

14440421 is a deficient number, since it is larger than the sum of its proper divisors (307291).

14440421 is an equidigital number, since it uses as much as digits as its factorization.

14440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307290.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 14440421 is about 3800.0553943331. The cubic root of 14440421 is about 243.5155048335.

Adding to 14440421 its reverse (12404441), we get a palindrome (26844862).

The spelling of 14440421 in words is "fourteen million, four hundred forty thousand, four hundred twenty-one".