440430424 has 192 divisors, whose sum is σ = 1096999200. Its totient is φ = 164376576.

The previous prime is 440430391. The next prime is 440430443. The reversal of 440430424 is 424034044.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8309982 + ... + 8310034.

Almost surely, 2^440430424 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 440430424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548499600).

440430424 is an abundant number, since it is smaller than the sum of its proper divisors (656568776).

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

440430424 is a wasteful number, since it uses less digits than its factorization.

440430424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 440430424 is about 20986.4342850328. The cubic root of 440430424 is about 760.8384237504.

Adding to 440430424 its reverse (424034044), we get a palindrome (864464468).

The spelling of 440430424 in words is "four hundred forty million, four hundred thirty thousand, four hundred twenty-four".