440310234 has 192 divisors, whose sum is σ = 1195326720. Its totient is φ = 105431040.

The previous prime is 440310223. The next prime is 440310287. The reversal of 440310234 is 432013044.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 440310234.

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 95 ways as a sum of consecutive naturals, for example, 4947262 + ... + 4947350.

It is an arithmetic number, because the mean of its divisors is an integer number (6225660).

Almost surely, 2^440310234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440310234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (597663360).

440310234 is an abundant number, since it is smaller than the sum of its proper divisors (755016486).

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

440310234 is a wasteful number, since it uses less digits than its factorization.

440310234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 440310234 is about 20983.5705731889. The cubic root of 440310234 is about 760.7692085125.

Adding to 440310234 its reverse (432013044), we get a palindrome (872323278).

The spelling of 440310234 in words is "four hundred forty million, three hundred ten thousand, two hundred thirty-four".