444402220 has 24 divisors (see below), whose sum is σ = 933652944. Its totient is φ = 177683136.

The previous prime is 444402181. The next prime is 444402247. The reversal of 444402220 is 22204444.

It is a junction number, because it is equal to n+sod(n) for n = 444402191 and 444402200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70519 + ... + 76561.

It is an arithmetic number, because the mean of its divisors is an integer number (38902206).

Almost surely, 2^444402220 is an apocalyptic number.

It is an amenable number.

444402220 is an abundant number, since it is smaller than the sum of its proper divisors (489250724).

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

444402220 is a wasteful number, since it uses less digits than its factorization.

444402220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9729 (or 9727 counting only the distinct ones).

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

The square root of 444402220 is about 21080.8496033723. The cubic root of 444402220 is about 763.1186601420.

Adding to 444402220 its reverse (22204444), we get a palindrome (466606664).

The spelling of 444402220 in words is "four hundred forty-four million, four hundred two thousand, two hundred twenty".