9847845 has 64 divisors (see below), whose sum is σ = 21219840. Its totient is φ = 4230144.

The previous prime is 9847829. The next prime is 9847847. The reversal of 9847845 is 5487489.

It is not a de Polignac number, because 9847845 - 2⁴ = 9847829 is a prime.

It is a super-2 number, since 2×9847845² = 193960102288050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

9847845 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9847845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9847847) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15759 + ... + 16371.

It is an arithmetic number, because the mean of its divisors is an integer number (331560).

Almost surely, 2^9847845 is an apocalyptic number.

It is an amenable number.

9847845 is an abundant number, since it is smaller than the sum of its proper divisors (11371995).

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

9847845 is a wasteful number, since it uses less digits than its factorization.

9847845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651 (or 645 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 9847845 is about 3138.1276264677. The cubic root of 9847845 is about 214.3451863500.

The spelling of 9847845 in words is "nine million, eight hundred forty-seven thousand, eight hundred forty-five".