847982 has 4 divisors (see below), whose sum is σ = 1271976. Its totient is φ = 423990.

The previous prime is 847969. The next prime is 847991. The reversal of 847982 is 289748.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 847982.

It is an unprimeable number.

847982 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 as a sum of consecutive naturals, namely, 211994 + ... + 211997.

It is an arithmetic number, because the mean of its divisors is an integer number (317994).

2⁸⁴⁷⁹⁸² is an apocalyptic number.

847982 is a deficient number, since it is larger than the sum of its proper divisors (423994).

847982 is a wasteful number, since it uses less digits than its factorization.

847982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423993.

The product of its digits is 32256, while the sum is 38.

The square root of 847982 is about 920.8593812304. The cubic root of 847982 is about 94.6518001077.

The spelling of 847982 in words is "eight hundred forty-seven thousand, nine hundred eighty-two".