9609885 has 12 divisors (see below), whose sum is σ = 16657212. Its totient is φ = 5125248.

The previous prime is 9609881. The next prime is 9609893. The reversal of 9609885 is 5889069.

It can be written as a sum of positive squares in 2 ways, for example, as 3229209 + 6380676 = 1797^2 + 2526^2 .

It is not a de Polignac number, because 9609885 - 2² = 9609881 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: 213553 = 9609885 / (9 + 6 + 0 + 9 + 8 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 9609885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9609881) 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 11 ways as a sum of consecutive naturals, for example, 106732 + ... + 106821.

It is an arithmetic number, because the mean of its divisors is an integer number (1388101).

Almost surely, 2^9609885 is an apocalyptic number.

It is an amenable number.

9609885 is a deficient number, since it is larger than the sum of its proper divisors (7047327).

9609885 is a wasteful number, since it uses less digits than its factorization.

9609885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213564 (or 213561 counting only the distinct ones).

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

The square root of 9609885 is about 3099.9814515574. The cubic root of 9609885 is about 212.6046358963.

The spelling of 9609885 in words is "nine million, six hundred nine thousand, eight hundred eighty-five".