447828481 has 4 divisors (see below), whose sum is σ = 448107732. Its totient is φ = 447549232.

The previous prime is 447828443. The next prime is 447828503. The reversal of 447828481 is 184828744.

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 383572225 + 64256256 = 19585^2 + 8016^2 .

It is a cyclic number.

It is not a de Polignac number, because 447828481 - 2⁹ = 447827969 is a prime.

It is a super-2 number, since 2×447828481² = 401100696789534722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447828181) 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 3 ways as a sum of consecutive naturals, for example, 137206 + ... + 140431.

It is an arithmetic number, because the mean of its divisors is an integer number (112026933).

Almost surely, 2^447828481 is an apocalyptic number.

It is an amenable number.

447828481 is a deficient number, since it is larger than the sum of its proper divisors (279251).

447828481 is a wasteful number, since it uses less digits than its factorization.

447828481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279250.

The product of its digits is 458752, while the sum is 46.

The square root of 447828481 is about 21161.9583451060. The cubic root of 447828481 is about 765.0748106314.

The spelling of 447828481 in words is "four hundred forty-seven million, eight hundred twenty-eight thousand, four hundred eighty-one".