9993985 has 8 divisors (see below), whose sum is σ = 12033216. Its totient is φ = 7968240.

The previous prime is 9993967. The next prime is 9993989. The reversal of 9993985 is 5893999.

9993985 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9993985 - 2⁷ = 9993857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9993989) 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, 1659 + ... + 4768.

It is an arithmetic number, because the mean of its divisors is an integer number (1504152).

Almost surely, 2^9993985 is an apocalyptic number.

It is an amenable number.

9993985 is a deficient number, since it is larger than the sum of its proper divisors (2039231).

9993985 is a wasteful number, since it uses less digits than its factorization.

9993985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6743.

The product of its digits is 787320, while the sum is 52.

The square root of 9993985 is about 3161.3264621042. The cubic root of 9993985 is about 215.4002639239.

The spelling of 9993985 in words is "nine million, nine hundred ninety-three thousand, nine hundred eighty-five".