447831081 has 12 divisors (see below), whose sum is σ = 647051652. Its totient is φ = 298468896.

The previous prime is 447831067. The next prime is 447831089. The reversal of 447831081 is 180138744.

It can be written as a sum of positive squares in 2 ways, for example, as 147987225 + 299843856 = 12165^2 + 17316^2 .

It is not a de Polignac number, because 447831081 - 2¹¹ = 447829033 is a prime.

It is a super-2 number, since 2×447831081² = 401105354219257122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (447831089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52915 + ... + 60791.

It is an arithmetic number, because the mean of its divisors is an integer number (53920971).

Almost surely, 2^447831081 is an apocalyptic number.

It is an amenable number.

447831081 is a deficient number, since it is larger than the sum of its proper divisors (199220571).

447831081 is a wasteful number, since it uses less digits than its factorization.

447831081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14200 (or 14197 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 447831081 is about 21162.0197760044. The cubic root of 447831081 is about 765.0762912509.

The spelling of 447831081 in words is "four hundred forty-seven million, eight hundred thirty-one thousand, eighty-one".