444424422 has 64 divisors (see below), whose sum is σ = 973728000. Its totient is φ = 134414208.

The previous prime is 444424417. The next prime is 444424439. The reversal of 444424422 is 224424444.

It is a super-3 number, since 3×444424422³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 444424422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1940604 + ... + 1940832.

It is an arithmetic number, because the mean of its divisors is an integer number (15214500).

Almost surely, 2^444424422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444424422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486864000).

444424422 is an abundant number, since it is smaller than the sum of its proper divisors (529303578).

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

444424422 is a wasteful number, since it uses less digits than its factorization.

444424422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565.

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

The square root of 444424422 is about 21081.3761884750. The cubic root of 444424422 is about 763.1313682081.

Adding to 444424422 its reverse (224424444), we get a palindrome (668848866).

The spelling of 444424422 in words is "four hundred forty-four million, four hundred twenty-four thousand, four hundred twenty-two".