4444442220 has 48 divisors (see below), whose sum is σ = 12780780768. Its totient is φ = 1153152000.

The previous prime is 4444442207. The next prime is 4444442227. The reversal of 4444442220 is 222444444.

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

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (4444442227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 998781 + ... + 1003220.

It is an arithmetic number, because the mean of its divisors is an integer number (266266266).

Almost surely, 2^4444442220 is an apocalyptic number.

It is an amenable number.

4444442220 is an abundant number, since it is smaller than the sum of its proper divisors (8336338548).

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

4444442220 is a wasteful number, since it uses less digits than its factorization.

4444442220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002050 (or 2002048 counting only the distinct ones).

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

The square root of 4444442220 is about 66666.6499833312. The cubic root of 4444442220 is about 1644.1411085893.

Adding to 4444442220 its reverse (222444444), we get a palindrome (4666886664).

The spelling of 4444442220 in words is "four billion, four hundred forty-four million, four hundred forty-two thousand, two hundred twenty".