447831 has 12 divisors (see below), whose sum is σ = 685152. Its totient is φ = 280896.

The previous prime is 447829. The next prime is 447841. The reversal of 447831 is 138744.

It is not a de Polignac number, because 447831 - 2¹ = 447829 is a prime.

It is a super-2 number, since 2×447831² = 401105209122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 447795 and 447804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447841) 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, 1311 + ... + 1616.

It is an arithmetic number, because the mean of its divisors is an integer number (57096).

2⁴⁴⁷⁸³¹ is an apocalyptic number.

447831 is a deficient number, since it is larger than the sum of its proper divisors (237321).

447831 is a wasteful number, since it uses less digits than its factorization.

447831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2950 (or 2947 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 447831 is about 669.2017632971. The cubic root of 447831 is about 76.5076245124.

It can be divided in two parts, 44 and 7831, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 447831 in words is "four hundred forty-seven thousand, eight hundred thirty-one".