447005 has 18 divisors (see below), whose sum is σ = 607194. Its totient is φ = 315744.

The previous prime is 447001. The next prime is 447011. The reversal of 447005 is 500744.

It can be written as a sum of positive squares in 3 ways, for example, as 2116 + 444889 = 46^2 + 667^2 .

It is not a de Polignac number, because 447005 - 2² = 447001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447001) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19424 + ... + 19446.

It is an arithmetic number, because the mean of its divisors is an integer number (33733).

2⁴⁴⁷⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

447005 is a deficient number, since it is larger than the sum of its proper divisors (160189).

447005 is a wasteful number, since it uses less digits than its factorization.

447005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 447005 is about 668.5843252724. The cubic root of 447005 is about 76.4605575078.

Subtracting from 447005 its sum of digits (20), we obtain a triangular number (446985 = T₉₄₅).

Multiplying 447005 by its sum of digits (20), we get a square (8940100 = 2990²).

Adding to 447005 its reverse (500744), we get a palindrome (947749).

The spelling of 447005 in words is "four hundred forty-seven thousand, five".