440420513020 has 24 divisors (see below), whose sum is σ = 934417958544. Its totient is φ = 174352037376.

The previous prime is 440420513009. The next prime is 440420513021. The reversal of 440420513020 is 20315024044.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440420513021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113508502 + ... + 113512381.

It is an arithmetic number, because the mean of its divisors is an integer number (38934081606).

Almost surely, 2^440420513020 is an apocalyptic number.

It is an amenable number.

440420513020 is an abundant number, since it is smaller than the sum of its proper divisors (493997445524).

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

440420513020 is a wasteful number, since it uses less digits than its factorization.

440420513020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227020989 (or 227020987 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 440420513020 its reverse (20315024044), we get a palindrome (460735537064).

The spelling of 440420513020 in words is "four hundred forty billion, four hundred twenty million, five hundred thirteen thousand, twenty".