4221443 has 8 divisors (see below), whose sum is σ = 4557600. Its totient is φ = 3898048.

The previous prime is 4221433. The next prime is 4221449. The reversal of 4221443 is 3441224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4221443 - 2⁶ = 4221379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4221449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2498 + ... + 3831.

It is an arithmetic number, because the mean of its divisors is an integer number (569700).

Almost surely, 2^4221443 is an apocalyptic number.

4221443 is a deficient number, since it is larger than the sum of its proper divisors (336157).

4221443 is a wasteful number, since it uses less digits than its factorization.

4221443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6381.

The product of its digits is 768, while the sum is 20.

The square root of 4221443 is about 2054.6150491029. The cubic root of 4221443 is about 161.6169760252.

Adding to 4221443 its reverse (3441224), we get a palindrome (7662667).

It can be divided in two parts, 4221 and 443, that added together give a palindrome (4664).

The spelling of 4221443 in words is "four million, two hundred twenty-one thousand, four hundred forty-three".