444002666 has 16 divisors (see below), whose sum is σ = 680182920. Its totient is φ = 217324800.

The previous prime is 444002641. The next prime is 444002687. The reversal of 444002666 is 666200444.

It can be written as a sum of positive squares in 4 ways, for example, as 443987041 + 15625 = 21071^2 + 125^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5630 + ... + 30326.

Almost surely, 2^444002666 is an apocalyptic number.

444002666 is a deficient number, since it is larger than the sum of its proper divisors (236180254).

444002666 is a wasteful number, since it uses less digits than its factorization.

444002666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24889.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 444002666 is about 21071.3707669909. The cubic root of 444002666 is about 762.8898895045.

The spelling of 444002666 in words is "four hundred forty-four million, two thousand, six hundred sixty-six".