447842 has 4 divisors (see below), whose sum is σ = 671766. Its totient is φ = 223920.

The previous prime is 447841. The next prime is 447859. The reversal of 447842 is 248744.

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

It can be written as a sum of positive squares in only one way, i.e., 326041 + 121801 = 571^2 + 349^2 .

It is not an unprimeable number, because it can be changed into a prime (447841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111959 + ... + 111962.

2⁴⁴⁷⁸⁴² is an apocalyptic number.

447842 is a deficient number, since it is larger than the sum of its proper divisors (223924).

447842 is a wasteful number, since it uses less digits than its factorization.

447842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223923.

The product of its digits is 7168, while the sum is 29.

The square root of 447842 is about 669.2099819937. The cubic root of 447842 is about 76.5082509220.

The spelling of 447842 in words is "four hundred forty-seven thousand, eight hundred forty-two".