440140422 has 16 divisors (see below), whose sum is σ = 890172720. Its totient is φ = 145064832.

The previous prime is 440140403. The next prime is 440140429. The reversal of 440140422 is 224041044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440140429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411583 + ... + 412650.

It is an arithmetic number, because the mean of its divisors is an integer number (55635795).

Almost surely, 2^440140422 is an apocalyptic number.

440140422 is an abundant number, since it is smaller than the sum of its proper divisors (450032298).

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

440140422 is a wasteful number, since it uses less digits than its factorization.

440140422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824327.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 440140422 is about 20979.5238744829. The cubic root of 440140422 is about 760.6713953934.

Adding to 440140422 its reverse (224041044), we get a palindrome (664181466).

The spelling of 440140422 in words is "four hundred forty million, one hundred forty thousand, four hundred twenty-two".