444444444440 has 32 divisors (see below), whose sum is σ = 1000048140000. Its totient is φ = 177769219584.

The previous prime is 444444444401. The next prime is 444444444443. The reversal of 444444444440 is 44444444444.

It is a happy number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 444444444391 and 444444444400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444444444443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609341 + ... + 1122579.

It is an arithmetic number, because the mean of its divisors is an integer number (31251504375).

Almost surely, 2^444444444440 is an apocalyptic number.

444444444440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444444444440 is an abundant number, since it is smaller than the sum of its proper divisors (555603695560).

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

444444444440 is a wasteful number, since it uses less digits than its factorization.

444444444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534899 (or 534895 counting only the distinct ones).

The product of its (nonzero) digits is 4194304, while the sum is 44.

Adding to 444444444440 its reverse (44444444444), we get a palindrome (488888888884).

It can be divided in two parts, 4 and 44444444440, that added together give a palindrome (44444444444).

The spelling of 444444444440 in words is "four hundred forty-four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty".