444042220 has 12 divisors (see below), whose sum is σ = 932488704. Its totient is φ = 177616880.

The previous prime is 444042211. The next prime is 444042251. The reversal of 444042220 is 22240444.

It is a junction number, because it is equal to n+sod(n) for n = 444042191 and 444042200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11101036 + ... + 11101075.

It is an arithmetic number, because the mean of its divisors is an integer number (77707392).

Almost surely, 2^444042220 is an apocalyptic number.

It is an amenable number.

444042220 is an abundant number, since it is smaller than the sum of its proper divisors (488446484).

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

444042220 is a wasteful number, since it uses less digits than its factorization.

444042220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22202120 (or 22202118 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 444042220 is about 21072.3093181550. The cubic root of 444042220 is about 762.9125428599.

Adding to 444042220 its reverse (22240444), we get a palindrome (466282664).

The spelling of 444042220 in words is "four hundred forty-four million, forty-two thousand, two hundred twenty".