8447982 has 8 divisors (see below), whose sum is σ = 16895976. Its totient is φ = 2815992.

The previous prime is 8447981. The next prime is 8447987. The reversal of 8447982 is 2897448.

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

8447982 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 8 + 4 + 4⁴ + 7² + 9⁵ + 8 + 2²³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8447981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703993 + ... + 704004.

It is an arithmetic number, because the mean of its divisors is an integer number (2111997).

Almost surely, 2^8447982 is an apocalyptic number.

8447982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8447982 is a wasteful number, since it uses less digits than its factorization.

8447982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408002.

The product of its digits is 129024, while the sum is 42.

The square root of 8447982 is about 2906.5412434714. The cubic root of 8447982 is about 203.6655901373.

The spelling of 8447982 in words is "eight million, four hundred forty-seven thousand, nine hundred eighty-two".