440023430 has 48 divisors (see below), whose sum is σ = 1005127056. Its totient is φ = 137148480.

The previous prime is 440023417. The next prime is 440023453. The reversal of 440023430 is 34320044.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35429 + ... + 46208.

It is an arithmetic number, because the mean of its divisors is an integer number (20940147).

Almost surely, 2^440023430 is an apocalyptic number.

440023430 is an abundant number, since it is smaller than the sum of its proper divisors (565103626).

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

440023430 is a wasteful number, since it uses less digits than its factorization.

440023430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81669 (or 81662 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 440023430 is about 20976.7354466800. The cubic root of 440023430 is about 760.6039923939.

Adding to 440023430 its reverse (34320044), we get a palindrome (474343474).

The spelling of 440023430 in words is "four hundred forty million, twenty-three thousand, four hundred thirty".