440245664 has 36 divisors (see below), whose sum is σ = 874297494. Its totient is φ = 218217984.

The previous prime is 440245661. The next prime is 440245697. The reversal of 440245664 is 466542044.

It can be written as a sum of positive squares in 3 ways, for example, as 440160400 + 85264 = 20980^2 + 292^2 .

It is not an unprimeable number, because it can be changed into a prime (440245661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 600242 + ... + 600974.

Almost surely, 2^440245664 is an apocalyptic number.

It is an amenable number.

440245664 is a deficient number, since it is larger than the sum of its proper divisors (434051830).

440245664 is an equidigital number, since it uses as much as digits as its factorization.

440245664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017 (or 872 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

The square root of 440245664 is about 20982.0319321080. The cubic root of 440245664 is about 760.7320186212.

The spelling of 440245664 in words is "four hundred forty million, two hundred forty-five thousand, six hundred sixty-four".