444908405838 has 64 divisors (see below), whose sum is σ = 967187128320. Its totient is φ = 135623279232.

The previous prime is 444908405831. The next prime is 444908405873. The reversal of 444908405838 is 838504809444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444908405831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6991681 + ... + 7055027.

It is an arithmetic number, because the mean of its divisors is an integer number (15112298880).

Almost surely, 2^444908405838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444908405838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483593564160).

444908405838 is an abundant number, since it is smaller than the sum of its proper divisors (522278722482).

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

444908405838 is a wasteful number, since it uses less digits than its factorization.

444908405838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64201.

The product of its (nonzero) digits is 17694720, while the sum is 57.

The spelling of 444908405838 in words is "four hundred forty-four billion, nine hundred eight million, four hundred five thousand, eight hundred thirty-eight".