447730 has 8 divisors (see below), whose sum is σ = 805932. Its totient is φ = 179088.

The previous prime is 447703. The next prime is 447743. The reversal of 447730 is 37744.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 447561 + 169 = 669^2 + 13^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 447695 and 447704.

It is an unprimeable number.

447730 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22377 + ... + 22396.

2⁴⁴⁷⁷³⁰ is an apocalyptic number.

447730 is a deficient number, since it is larger than the sum of its proper divisors (358202).

447730 is a wasteful number, since it uses less digits than its factorization.

447730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44780.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 447730 is about 669.1262960010. The cubic root of 447730 is about 76.5018724533.

The spelling of 447730 in words is "four hundred forty-seven thousand, seven hundred thirty".