440320324420 has 12 divisors (see below), whose sum is σ = 924672681324. Its totient is φ = 176128129760.

The previous prime is 440320324399. The next prime is 440320324439. The reversal of 440320324420 is 24423023044.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 337867837696 + 102452486724 = 581264^2 + 320082^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11008008091 + ... + 11008008130.

It is an arithmetic number, because the mean of its divisors is an integer number (77056056777).

Almost surely, 2^440320324420 is an apocalyptic number.

It is an amenable number.

440320324420 is an abundant number, since it is smaller than the sum of its proper divisors (484352356904).

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

440320324420 is a wasteful number, since it uses less digits than its factorization.

440320324420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22016016230 (or 22016016228 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 440320324420 its reverse (24423023044), we get a palindrome (464743347464).

The spelling of 440320324420 in words is "four hundred forty billion, three hundred twenty million, three hundred twenty-four thousand, four hundred twenty".