444567009 has 16 divisors (see below), whose sum is σ = 598832640. Its totient is φ = 293354880.

The previous prime is 444566887. The next prime is 444567037. The reversal of 444567009 is 900765444.

It is a happy number.

It is not a de Polignac number, because 444567009 - 2⁹ = 444566497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (444567209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130672 + ... + 134030.

It is an arithmetic number, because the mean of its divisors is an integer number (37427040).

Almost surely, 2^444567009 is an apocalyptic number.

It is an amenable number.

444567009 is a deficient number, since it is larger than the sum of its proper divisors (154265631).

444567009 is a wasteful number, since it uses less digits than its factorization.

444567009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 444567009 is about 21084.7577410792. The cubic root of 444567009 is about 763.2129726176.

The spelling of 444567009 in words is "four hundred forty-four million, five hundred sixty-seven thousand, nine".