9864985 has 8 divisors (see below), whose sum is σ = 12748680. Its totient is φ = 7284864.

The previous prime is 9864983. The next prime is 9864989. The reversal of 9864985 is 5894689.

It is a happy number.

9864985 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1708249 + 8156736 = 1307^2 + 2856^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9864985 - 2¹ = 9864983 is a prime.

9864985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9864983) 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 7 ways as a sum of consecutive naturals, for example, 75820 + ... + 75949.

It is an arithmetic number, because the mean of its divisors is an integer number (1593585).

Almost surely, 2^9864985 is an apocalyptic number.

It is an amenable number.

9864985 is a deficient number, since it is larger than the sum of its proper divisors (2883695).

9864985 is a wasteful number, since it uses less digits than its factorization.

9864985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151787.

The product of its digits is 622080, while the sum is 49.

The square root of 9864985 is about 3140.8573670258. The cubic root of 9864985 is about 214.4694689422.

The spelling of 9864985 in words is "nine million, eight hundred sixty-four thousand, nine hundred eighty-five".