440240664 has 16 divisors (see below), whose sum is σ = 1100601720. Its totient is φ = 146746880.

The previous prime is 440240663. The next prime is 440240699. The reversal of 440240664 is 466042044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440240663) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9171657 + ... + 9171704.

Almost surely, 2^440240664 is an apocalyptic number.

It is an amenable number.

440240664 is an abundant number, since it is smaller than the sum of its proper divisors (660361056).

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

440240664 is a wasteful number, since it uses less digits than its factorization.

440240664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18343370 (or 18343366 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 440240664 is about 20981.9127822036. The cubic root of 440240664 is about 760.7291386576.

The spelling of 440240664 in words is "four hundred forty million, two hundred forty thousand, six hundred sixty-four".