440042440420 has 48 divisors (see below), whose sum is σ = 1009000294848. Its totient is φ = 159872088960.

The previous prime is 440042440403. The next prime is 440042440427. The reversal of 440042440420 is 24044240044.

It is not an unprimeable number, because it can be changed into a prime (440042440427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649602 + ... + 1141081.

It is an arithmetic number, because the mean of its divisors is an integer number (21020839476).

Almost surely, 2^440042440420 is an apocalyptic number.

It is an amenable number.

440042440420 is an abundant number, since it is smaller than the sum of its proper divisors (568957854428).

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

440042440420 is a wasteful number, since it uses less digits than its factorization.

440042440420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791820 (or 1791818 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 440042440420 its reverse (24044240044), we get a palindrome (464086680464).

The spelling of 440042440420 in words is "four hundred forty billion, forty-two million, four hundred forty thousand, four hundred twenty".