9860985 has 12 divisors (see below), whose sum is σ = 17092452. Its totient is φ = 5259168.

The previous prime is 9860971. The next prime is 9860987. The reversal of 9860985 is 5890689.

It can be written as a sum of positive squares in 2 ways, for example, as 5588496 + 4272489 = 2364^2 + 2067^2 .

It is not a de Polignac number, because 9860985 - 2¹⁷ = 9729913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 219133 = 9860985 / (9 + 8 + 6 + 0 + 9 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 9860985.

It is not an unprimeable number, because it can be changed into a prime (9860987) 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, 109522 + ... + 109611.

It is an arithmetic number, because the mean of its divisors is an integer number (1424371).

Almost surely, 2^9860985 is an apocalyptic number.

It is an amenable number.

9860985 is a deficient number, since it is larger than the sum of its proper divisors (7231467).

9860985 is a wasteful number, since it uses less digits than its factorization.

9860985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219144 (or 219141 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 9860985 is about 3140.2205336568. The cubic root of 9860985 is about 214.4404777222.

The spelling of 9860985 in words is "nine million, eight hundred sixty thousand, nine hundred eighty-five".