444715864 has 16 divisors (see below), whose sum is σ = 847512720. Its totient is φ = 218712480.

The previous prime is 444715829. The next prime is 444715867. The reversal of 444715864 is 468517444.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 444715864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444715867) 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, 455164 + ... + 456139.

It is an arithmetic number, because the mean of its divisors is an integer number (52969545).

Almost surely, 2^444715864 is an apocalyptic number.

It is an amenable number.

444715864 is a deficient number, since it is larger than the sum of its proper divisors (402796856).

444715864 is a wasteful number, since it uses less digits than its factorization.

444715864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911370 (or 911366 counting only the distinct ones).

The product of its digits is 430080, while the sum is 43.

The square root of 444715864 is about 21088.2873652651. The cubic root of 444715864 is about 763.2981456715.

The spelling of 444715864 in words is "four hundred forty-four million, seven hundred fifteen thousand, eight hundred sixty-four".