440444002005 has 64 divisors (see below), whose sum is σ = 895115020800. Its totient is φ = 201290780160.

The previous prime is 440444002001. The next prime is 440444002007. The reversal of 440444002005 is 500200444044.

It is a happy number.

It is not a de Polignac number, because 440444002005 - 2² = 440444002001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 440444002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440444002001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3499875 + ... + 3623535.

It is an arithmetic number, because the mean of its divisors is an integer number (13986172200).

Almost surely, 2^440444002005 is an apocalyptic number.

440444002005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

440444002005 is an abundant number, since it is smaller than the sum of its proper divisors (454671018795).

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

440444002005 is a wasteful number, since it uses less digits than its factorization.

440444002005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127451 (or 127445 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

Adding to 440444002005 its reverse (500200444044), we get a palindrome (940644446049).

The spelling of 440444002005 in words is "four hundred forty billion, four hundred forty-four million, two thousand, five".