9938985 has 32 divisors (see below), whose sum is σ = 18370560. Its totient is φ = 4494528.

The previous prime is 9938983. The next prime is 9938989. The reversal of 9938985 is 5898399.

It is not a de Polignac number, because 9938985 - 2¹ = 9938983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9938983) 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 31 ways as a sum of consecutive naturals, for example, 10356 + ... + 11274.

It is an arithmetic number, because the mean of its divisors is an integer number (574080).

Almost surely, 2^9938985 is an apocalyptic number.

It is an amenable number.

9938985 is a deficient number, since it is larger than the sum of its proper divisors (8431575).

9938985 is a wasteful number, since it uses less digits than its factorization.

9938985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037.

The product of its digits is 699840, while the sum is 51.

The square root of 9938985 is about 3152.6155807520. The cubic root of 9938985 is about 215.0043986841.

The spelling of 9938985 in words is "nine million, nine hundred thirty-eight thousand, nine hundred eighty-five".