447222009 has 24 divisors (see below), whose sum is σ = 682178560. Its totient is φ = 259017984.

The previous prime is 447221989. The next prime is 447222037. The reversal of 447222009 is 900222744.

It is not a de Polignac number, because 447222009 - 2⁵ = 447221977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447221009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8569 + ... + 31110.

Almost surely, 2^447222009 is an apocalyptic number.

It is an amenable number.

447222009 is a deficient number, since it is larger than the sum of its proper divisors (234956551).

447222009 is a wasteful number, since it uses less digits than its factorization.

447222009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39729 (or 39712 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 447222009 is about 21147.6241928024. The cubic root of 447222009 is about 764.7292869292.

The spelling of 447222009 in words is "four hundred forty-seven million, two hundred twenty-two thousand, nine".