447805 has 4 divisors (see below), whose sum is σ = 537372. Its totient is φ = 358240.

The previous prime is 447793. The next prime is 447817. The reversal of 447805 is 508744.

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

It is an interprime number because it is at equal distance from previous prime (447793) and next prime (447817).

It can be written as a sum of positive squares in 2 ways, for example, as 127449 + 320356 = 357^2 + 566^2 .

It is not a de Polignac number, because 447805 - 2⁷ = 447677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44776 + ... + 44785.

It is an arithmetic number, because the mean of its divisors is an integer number (134343).

2⁴⁴⁷⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

447805 is a deficient number, since it is larger than the sum of its proper divisors (89567).

447805 is an equidigital number, since it uses as much as digits as its factorization.

447805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89566.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 447805 is about 669.1823368858. The cubic root of 447805 is about 76.5061438670.

The spelling of 447805 in words is "four hundred forty-seven thousand, eight hundred five".