444221022 has 32 divisors (see below), whose sum is σ = 1019054592. Its totient is φ = 126458784.

The previous prime is 444221009. The next prime is 444221059. The reversal of 444221022 is 220122444.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 444221022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7458 + ... + 30725.

It is an arithmetic number, because the mean of its divisors is an integer number (31845456).

Almost surely, 2^444221022 is an apocalyptic number.

444221022 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

444221022 is an abundant number, since it is smaller than the sum of its proper divisors (574833570).

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

444221022 is a wasteful number, since it uses less digits than its factorization.

444221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38472.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 444221022 is about 21076.5514731419. The cubic root of 444221022 is about 763.0149295078.

Adding to 444221022 its reverse (220122444), we get a palindrome (664343466).

The spelling of 444221022 in words is "four hundred forty-four million, two hundred twenty-one thousand, twenty-two".