447947825 has 12 divisors (see below), whose sum is σ = 598183068. Its totient is φ = 330792000.

The previous prime is 447947821. The next prime is 447947831. The reversal of 447947825 is 528749744.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1175056 + 446772769 = 1084^2 + 21137^2 .

It is not a de Polignac number, because 447947825 - 2² = 447947821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447947821) 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 11 ways as a sum of consecutive naturals, for example, 688826 + ... + 689475.

It is an arithmetic number, because the mean of its divisors is an integer number (49848589).

Almost surely, 2^447947825 is an apocalyptic number.

It is an amenable number.

447947825 is a deficient number, since it is larger than the sum of its proper divisors (150235243).

447947825 is a wasteful number, since it uses less digits than its factorization.

447947825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378324 (or 1378319 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 50.

The square root of 447947825 is about 21164.7779341055. Note that the first 3 decimals coincide. The cubic root of 447947825 is about 765.1427674365.

The spelling of 447947825 in words is "four hundred forty-seven million, nine hundred forty-seven thousand, eight hundred twenty-five".