9864845 has 16 divisors (see below), whose sum is σ = 12830400. Its totient is φ = 7252224.

The previous prime is 9864839. The next prime is 9864847. The reversal of 9864845 is 5484689.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 9864845 - 2¹⁸ = 9602701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9864796 and 9864805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9864847) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 2306 + ... + 5004.

It is an arithmetic number, because the mean of its divisors is an integer number (801900).

Almost surely, 2^9864845 is an apocalyptic number.

It is an amenable number.

9864845 is a deficient number, since it is larger than the sum of its proper divisors (2965555).

9864845 is a wasteful number, since it uses less digits than its factorization.

9864845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764.

The product of its digits is 276480, while the sum is 44.

The square root of 9864845 is about 3140.8350800384. The cubic root of 9864845 is about 214.4684543819.

The spelling of 9864845 in words is "nine million, eight hundred sixty-four thousand, eight hundred forty-five".