447745 has 8 divisors (see below), whose sum is σ = 541800. Its totient is φ = 355200.

The previous prime is 447743. The next prime is 447749. The reversal of 447745 is 547744.

It can be written as a sum of positive squares in 4 ways, for example, as 36864 + 410881 = 192^2 + 641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 447745 - 2¹ = 447743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (447743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445 + ... + 1045.

It is an arithmetic number, because the mean of its divisors is an integer number (67725).

2⁴⁴⁷⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

447745 is a deficient number, since it is larger than the sum of its proper divisors (94055).

447745 is a wasteful number, since it uses less digits than its factorization.

447745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755.

The product of its digits is 15680, while the sum is 31.

The square root of 447745 is about 669.1375045534. The cubic root of 447745 is about 76.5027267742.

Subtracting 447745 from its reverse (547744), we obtain a palindrome (99999).

The spelling of 447745 in words is "four hundred forty-seven thousand, seven hundred forty-five".