447897609 has 12 divisors (see below), whose sum is σ = 650317876. Its totient is φ = 297050112.

The previous prime is 447897587. The next prime is 447897629. The reversal of 447897609 is 906798744.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52881984 + 395015625 = 7272^2 + 19875^2 .

It is not a de Polignac number, because 447897609 - 2⁵ = 447897577 is a prime.

It is a super-2 number, since 2×447897609² = 401224536295833762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447897629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127192 + ... + 130665.

Almost surely, 2^447897609 is an apocalyptic number.

It is an amenable number.

447897609 is a deficient number, since it is larger than the sum of its proper divisors (202420267).

447897609 is a wasteful number, since it uses less digits than its factorization.

447897609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258056 (or 258053 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 447897609 is about 21163.5915902760. The cubic root of 447897609 is about 765.1141749362.

The spelling of 447897609 in words is "four hundred forty-seven million, eight hundred ninety-seven thousand, six hundred nine".