447728841 has 24 divisors (see below), whose sum is σ = 740772864. Its totient is φ = 255268800.

The previous prime is 447728819. The next prime is 447728843. The reversal of 447728841 is 148827744.

It is not a de Polignac number, because 447728841 - 2⁶ = 447728777 is a prime.

It is a super-2 number, since 2×447728841² = 400922230126406562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (447728843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21016 + ... + 36566.

It is an arithmetic number, because the mean of its divisors is an integer number (30865536).

Almost surely, 2^447728841 is an apocalyptic number.

It is an amenable number.

447728841 is a deficient number, since it is larger than the sum of its proper divisors (293044023).

447728841 is a wasteful number, since it uses less digits than its factorization.

447728841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16021 (or 16018 counting only the distinct ones).

The product of its digits is 401408, while the sum is 45.

The square root of 447728841 is about 21159.6039896781. The cubic root of 447728841 is about 765.0180644203.

The spelling of 447728841 in words is "four hundred forty-seven million, seven hundred twenty-eight thousand, eight hundred forty-one".