8442847 has 12 divisors (see below), whose sum is σ = 10009656. Its totient is φ = 7098000.

The previous prime is 8442839. The next prime is 8442869. The reversal of 8442847 is 7482448.

It is not a de Polignac number, because 8442847 - 2³ = 8442839 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8442647) 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 11 ways as a sum of consecutive naturals, for example, 972 + ... + 4222.

It is an arithmetic number, because the mean of its divisors is an integer number (834138).

Almost surely, 2^8442847 is an apocalyptic number.

8442847 is a deficient number, since it is larger than the sum of its proper divisors (1566809).

8442847 is a wasteful number, since it uses less digits than its factorization.

8442847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318 (or 3311 counting only the distinct ones).

The product of its digits is 57344, while the sum is 37.

The square root of 8442847 is about 2905.6577568599. The cubic root of 8442847 is about 203.6243165813.

The spelling of 8442847 in words is "eight million, four hundred forty-two thousand, eight hundred forty-seven".