440020423212 has 24 divisors (see below), whose sum is σ = 1027420978416. Its totient is φ = 146572523328.

The previous prime is 440020423207. The next prime is 440020423279. The reversal of 440020423212 is 212324020044.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12600723 + ... + 12635594.

It is an arithmetic number, because the mean of its divisors is an integer number (42809207434).

Almost surely, 2^440020423212 is an apocalyptic number.

It is an amenable number.

440020423212 is an abundant number, since it is smaller than the sum of its proper divisors (587400555204).

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

440020423212 is a wasteful number, since it uses less digits than its factorization.

440020423212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25237777 (or 25237775 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 440020423212 its reverse (212324020044), we get a palindrome (652344443256).

The spelling of 440020423212 in words is "four hundred forty billion, twenty million, four hundred twenty-three thousand, two hundred twelve".