447505 has 4 divisors (see below), whose sum is σ = 537012. Its totient is φ = 358000.

The previous prime is 447481. The next prime is 447509. The reversal of 447505 is 505744.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 345744 + 101761 = 588^2 + 319^2 .

It is not a de Polignac number, because 447505 - 2¹⁵ = 414737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 447505.

It is not an unprimeable number, because it can be changed into a prime (447509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44746 + ... + 44755.

It is an arithmetic number, because the mean of its divisors is an integer number (134253).

2⁴⁴⁷⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

447505 is a deficient number, since it is larger than the sum of its proper divisors (89507).

447505 is an equidigital number, since it uses as much as digits as its factorization.

447505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89506.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 447505 is about 668.9581451780. The cubic root of 447505 is about 76.4890553497.

The spelling of 447505 in words is "four hundred forty-seven thousand, five hundred five".