447905 has 8 divisors (see below), whose sum is σ = 556200. Its totient is φ = 345856.

The previous prime is 447901. The next prime is 447907. The reversal of 447905 is 509744.

It can be written as a sum of positive squares in 4 ways, for example, as 135424 + 312481 = 368^2 + 559^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 447905 - 2² = 447901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a plaindrome in base 6.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (447901) 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, 1400 + ... + 1689.

It is an arithmetic number, because the mean of its divisors is an integer number (69525).

2⁴⁴⁷⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

447905 is a deficient number, since it is larger than the sum of its proper divisors (108295).

447905 is a wasteful number, since it uses less digits than its factorization.

447905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 447905 is about 669.2570507660. The cubic root of 447905 is about 76.5118383434.

The spelling of 447905 in words is "four hundred forty-seven thousand, nine hundred five".