440408000844 has 36 divisors (see below), whose sum is σ = 1272289780944. Its totient is φ = 125830857312.

The previous prime is 440408000843. The next prime is 440408000863. The reversal of 440408000844 is 448000804044.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 440408000799 and 440408000808.

It is not an unprimeable number, because it can be changed into a prime (440408000843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 873825147 + ... + 873825650.

It is an arithmetic number, because the mean of its divisors is an integer number (35341382804).

Almost surely, 2^440408000844 is an apocalyptic number.

It is an amenable number.

440408000844 is an abundant number, since it is smaller than the sum of its proper divisors (831881780100).

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

440408000844 is a wasteful number, since it uses less digits than its factorization.

440408000844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747650814 (or 1747650809 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 36.

Adding to 440408000844 its reverse (448000804044), we get a palindrome (888408804888).

The spelling of 440408000844 in words is "four hundred forty billion, four hundred eight million, eight hundred forty-four", and thus it is an aban number.