4220443 has 4 divisors (see below), whose sum is σ = 4300128. Its totient is φ = 4140760.

The previous prime is 4220441. The next prime is 4220449. The reversal of 4220443 is 3440224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4220443 - 2¹ = 4220441 is a prime.

It is a d-powerful number, because it can be written as 4⁵ + 2⁹ + 2¹³ + 0 + 4⁷ + 4¹¹ + 3³ .

It is a Duffinian number.

4220443 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4220443.

It is not an unprimeable number, because it can be changed into a prime (4220441) 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, 39763 + ... + 39868.

It is an arithmetic number, because the mean of its divisors is an integer number (1075032).

Almost surely, 2^4220443 is an apocalyptic number.

4220443 is a deficient number, since it is larger than the sum of its proper divisors (79685).

4220443 is an equidigital number, since it uses as much as digits as its factorization.

4220443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79684.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 4220443 is about 2054.3716801008. The cubic root of 4220443 is about 161.6042134272.

Adding to 4220443 its reverse (3440224), we get a palindrome (7660667).

The spelling of 4220443 in words is "four million, two hundred twenty thousand, four hundred forty-three".