440444040 has 128 divisors (see below), whose sum is σ = 1352885760. Its totient is φ = 114683904.

The previous prime is 440444021. The next prime is 440444047. The reversal of 440444040 is 40444044.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 440444040.

It is not an unprimeable number, because it can be changed into a prime (440444047) 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, 1199937 + ... + 1200303.

It is an arithmetic number, because the mean of its divisors is an integer number (10569420).

Almost surely, 2^440444040 is an apocalyptic number.

440444040 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 440444040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676442880).

440444040 is an abundant number, since it is smaller than the sum of its proper divisors (912441720).

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

440444040 is a wasteful number, since it uses less digits than its factorization.

440444040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 440444040 is about 20986.7586825598. The cubic root of 440444040 is about 760.8462641633.

Adding to 440444040 its reverse (40444044), we get a palindrome (480888084).

It can be divided in two parts, 44044 and 4040, that added together give a palindrome (48084).

The spelling of 440444040 in words is "four hundred forty million, four hundred forty-four thousand, forty".