440123112 has 128 divisors (see below), whose sum is σ = 1436400000. Its totient is φ = 123102720.

The previous prime is 440123093. The next prime is 440123137. The reversal of 440123112 is 211321044.

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 31 ways as a sum of consecutive naturals, for example, 23764 + ... + 38012.

It is an arithmetic number, because the mean of its divisors is an integer number (11221875).

Almost surely, 2^440123112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440123112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718200000).

440123112 is an abundant number, since it is smaller than the sum of its proper divisors (996276888).

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

440123112 is a wasteful number, since it uses less digits than its factorization.

440123112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14288 (or 14278 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 440123112 is about 20979.1113253160. Note that the first 3 decimals coincide. The cubic root of 440123112 is about 760.6614232771.

Adding to 440123112 its reverse (211321044), we get a palindrome (651444156).

The spelling of 440123112 in words is "four hundred forty million, one hundred twenty-three thousand, one hundred twelve".