440400040220 has 48 divisors (see below), whose sum is σ = 1057108459008. Its totient is φ = 150973104960.

The previous prime is 440400040183. The next prime is 440400040229. The reversal of 440400040220 is 22040004044.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 440400040192 and 440400040201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440400040229) 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, 796865 + ... + 1231175.

It is an arithmetic number, because the mean of its divisors is an integer number (22023092896).

Almost surely, 2^440400040220 is an apocalyptic number.

It is an amenable number.

440400040220 is an abundant number, since it is smaller than the sum of its proper divisors (616708418788).

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

440400040220 is a wasteful number, since it uses less digits than its factorization.

440400040220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441570 (or 441568 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 440400040220 its reverse (22040004044), we get a palindrome (462440044264).

The spelling of 440400040220 in words is "four hundred forty billion, four hundred million, forty thousand, two hundred twenty".