8347842 has 24 divisors (see below), whose sum is σ = 18337644. Its totient is φ = 2744064.

The previous prime is 8347831. The next prime is 8347849. The reversal of 8347842 is 2487438.

It can be written as a sum of positive squares in 2 ways, for example, as 8346321 + 1521 = 2889^2 + 39^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8347797 and 8347806.

It is not an unprimeable number, because it can be changed into a prime (8347849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1863 + ... + 4490.

Almost surely, 2^8347842 is an apocalyptic number.

8347842 is an abundant number, since it is smaller than the sum of its proper divisors (9989802).

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

8347842 is a wasteful number, since it uses less digits than its factorization.

8347842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6434 (or 6431 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 8347842 is about 2889.2632278835. The cubic root of 8347842 is about 202.8576578236.

The spelling of 8347842 in words is "eight million, three hundred forty-seven thousand, eight hundred forty-two".