4444424220 has 24 divisors (see below), whose sum is σ = 12444387984. Its totient is φ = 1185179776.

The previous prime is 4444424219. The next prime is 4444424221. The reversal of 4444424220 is 224244444.

It is an interprime number because it is at equal distance from previous prime (4444424219) and next prime (4444424221).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4444424221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37036809 + ... + 37036928.

It is an arithmetic number, because the mean of its divisors is an integer number (518516166).

Almost surely, 2^4444424220 is an apocalyptic number.

It is an amenable number.

4444424220 is an abundant number, since it is smaller than the sum of its proper divisors (7999963764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4444424220 is a wasteful number, since it uses less digits than its factorization.

4444424220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74073749 (or 74073747 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

The square root of 4444424220 is about 66666.5149831608. The cubic root of 4444424220 is about 1644.1388889947.

Adding to 4444424220 its reverse (224244444), we get a palindrome (4668668664).

The spelling of 4444424220 in words is "four billion, four hundred forty-four million, four hundred twenty-four thousand, two hundred twenty".