440020040004 has 36 divisors (see below), whose sum is σ = 1114783693296. Its totient is φ = 146342250288.

The previous prime is 440020039999. The next prime is 440020040011. The reversal of 440020040004 is 400040020044.

It is a happy number.

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

It is a super-3 number, since 3×440020040004³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13779514 + ... + 13811409.

Almost surely, 2^440020040004 is an apocalyptic number.

It is an amenable number.

440020040004 is an abundant number, since it is smaller than the sum of its proper divisors (674763653292).

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

440020040004 is a wasteful number, since it uses less digits than its factorization.

440020040004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27591376 (or 27591371 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 440020040004 its reverse (400040020044), we get a palindrome (840060060048).

The spelling of 440020040004 in words is "four hundred forty billion, twenty million, forty thousand, four".