440080040 has 16 divisors (see below), whose sum is σ = 990180180. Its totient is φ = 176032000.

The previous prime is 440080013. The next prime is 440080049. The reversal of 440080040 is 40080044.

It can be written as a sum of positive squares in 2 ways, for example, as 382046116 + 58033924 = 19546^2 + 7618^2 .

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 = 440079994 and 440080021.

It is not an unprimeable number, because it can be changed into a prime (440080049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5500961 + ... + 5501040.

Almost surely, 2^440080040 is an apocalyptic number.

440080040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440080040 is an abundant number, since it is smaller than the sum of its proper divisors (550100140).

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

440080040 is a wasteful number, since it uses less digits than its factorization.

440080040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11002012 (or 11002008 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 440080040 is about 20978.0847552869. The cubic root of 440080040 is about 760.6366087977.

The spelling of 440080040 in words is "four hundred forty million, eighty thousand, forty".