444459665 has 8 divisors (see below), whose sum is σ = 574378728. Its totient is φ = 328216320.

The previous prime is 444459649. The next prime is 444459689. The reversal of 444459665 is 566954444.

It can be written as a sum of positive squares in 4 ways, for example, as 71351809 + 373107856 = 8447^2 + 19316^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 444459665 - 2⁴ = 444459649 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 3418856 + ... + 3418985.

It is an arithmetic number, because the mean of its divisors is an integer number (71797341).

Almost surely, 2^444459665 is an apocalyptic number.

It is an amenable number.

444459665 is a deficient number, since it is larger than the sum of its proper divisors (129919063).

444459665 is a wasteful number, since it uses less digits than its factorization.

444459665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6837859.

The product of its digits is 2073600, while the sum is 47.

The square root of 444459665 is about 21082.2120518697. The cubic root of 444459665 is about 763.1515398628.

The spelling of 444459665 in words is "four hundred forty-four million, four hundred fifty-nine thousand, six hundred sixty-five".