444324809 has 4 divisors (see below), whose sum is σ = 444931716. Its totient is φ = 443717904.

The previous prime is 444324791. The next prime is 444324817. The reversal of 444324809 is 908423444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 403005625 + 41319184 = 20075^2 + 6428^2 .

It is a cyclic number.

It is not a de Polignac number, because 444324809 - 2¹² = 444320713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444324889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302354 + ... + 303819.

It is an arithmetic number, because the mean of its divisors is an integer number (111232929).

Almost surely, 2^444324809 is an apocalyptic number.

It is an amenable number.

444324809 is a deficient number, since it is larger than the sum of its proper divisors (606907).

444324809 is an equidigital number, since it uses as much as digits as its factorization.

444324809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606906.

The product of its (nonzero) digits is 110592, while the sum is 38.

The square root of 444324809 is about 21079.0134731206. The cubic root of 444324809 is about 763.0743480254.

The spelling of 444324809 in words is "four hundred forty-four million, three hundred twenty-four thousand, eight hundred nine".