444904009 has 4 divisors (see below), whose sum is σ = 485349840. Its totient is φ = 404458180.

The previous prime is 444904001. The next prime is 444904013. The reversal of 444904009 is 900409444.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 444904009 - 2³ = 444904001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444904001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20222899 + ... + 20222920.

It is an arithmetic number, because the mean of its divisors is an integer number (121337460).

Almost surely, 2^444904009 is an apocalyptic number.

It is an amenable number.

444904009 is a deficient number, since it is larger than the sum of its proper divisors (40445831).

444904009 is a wasteful number, since it uses less digits than its factorization.

444904009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40445830.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 444904009 is about 21092.7477821170. The cubic root of 444904009 is about 763.4057728058.

The spelling of 444904009 in words is "four hundred forty-four million, nine hundred four thousand, nine".