9912785 has 16 divisors (see below), whose sum is σ = 12700800. Its totient is φ = 7401216.

The previous prime is 9912779. The next prime is 9912803. The reversal of 9912785 is 5872199.

It is a cyclic number.

It is not a de Polignac number, because 9912785 - 2⁴ = 9912769 is a prime.

It is a Curzon number.

It is an unprimeable number.

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, 11396 + ... + 12234.

It is an arithmetic number, because the mean of its divisors is an integer number (793800).

Almost surely, 2^9912785 is an apocalyptic number.

It is an amenable number.

9912785 is a deficient number, since it is larger than the sum of its proper divisors (2788015).

9912785 is a wasteful number, since it uses less digits than its factorization.

9912785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000.

The product of its digits is 45360, while the sum is 41.

The square root of 9912785 is about 3148.4575588691. The cubic root of 9912785 is about 214.8153092115.

The spelling of 9912785 in words is "nine million, nine hundred twelve thousand, seven hundred eighty-five".