444639384 has 96 divisors (see below), whose sum is σ = 1379589120. Its totient is φ = 126733248.

The previous prime is 444639373. The next prime is 444639421. The reversal of 444639384 is 483936444.

It is a happy number.

444639384 is a `hidden beast` number, since 4 + 4 + 4 + 639 + 3 + 8 + 4 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 282969 + ... + 284535.

It is an arithmetic number, because the mean of its divisors is an integer number (14370720).

Almost surely, 2^444639384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444639384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689794560).

444639384 is an abundant number, since it is smaller than the sum of its proper divisors (934949736).

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

444639384 is a wasteful number, since it uses less digits than its factorization.

444639384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149 (or 2142 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The square root of 444639384 is about 21086.4739584408. The cubic root of 444639384 is about 763.2543871029.

The spelling of 444639384 in words is "four hundred forty-four million, six hundred thirty-nine thousand, three hundred eighty-four".