444664516 has 24 divisors (see below), whose sum is σ = 800062200. Its totient is φ = 216115200.

The previous prime is 444664513. The next prime is 444664531. The reversal of 444664516 is 615466444.

It can be written as a sum of positive squares in 4 ways, for example, as 298116 + 444366400 = 546^2 + 21080^2 .

It is not an unprimeable number, because it can be changed into a prime (444664513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41260 + ... + 50908.

It is an arithmetic number, because the mean of its divisors is an integer number (33335925).

Almost surely, 2^444664516 is an apocalyptic number.

It is an amenable number.

444664516 is a deficient number, since it is larger than the sum of its proper divisors (355397684).

444664516 is a wasteful number, since it uses less digits than its factorization.

444664516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9975 (or 9973 counting only the distinct ones).

The product of its digits is 276480, while the sum is 40.

The square root of 444664516 is about 21087.0698770597. The cubic root of 444664516 is about 763.2687671065.

The spelling of 444664516 in words is "four hundred forty-four million, six hundred sixty-four thousand, five hundred sixteen".