440244424240 has 80 divisors (see below), whose sum is σ = 1059633607680. Its totient is φ = 169925748480.

The previous prime is 440244424237. The next prime is 440244424247. The reversal of 440244424240 is 42424442044.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 440244424196 and 440244424205.

It is not an unprimeable number, because it can be changed into a prime (440244424247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604771 + ... + 1116349.

It is an arithmetic number, because the mean of its divisors is an integer number (13245420096).

Almost surely, 2^440244424240 is an apocalyptic number.

440244424240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440244424240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529816803840).

440244424240 is an abundant number, since it is smaller than the sum of its proper divisors (619389183440).

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

440244424240 is a wasteful number, since it uses less digits than its factorization.

440244424240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511970 (or 511964 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 440244424240 its reverse (42424442044), we get a palindrome (482668866284).

The spelling of 440244424240 in words is "four hundred forty billion, two hundred forty-four million, four hundred twenty-four thousand, two hundred forty".