9855885 has 16 divisors (see below), whose sum is σ = 16982784. Its totient is φ = 4852032.

The previous prime is 9855871. The next prime is 9855887. The reversal of 9855885 is 5885589.

9855885 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9855885 - 2⁶ = 9855821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9855887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25077 + ... + 25466.

It is an arithmetic number, because the mean of its divisors is an integer number (1061424).

Almost surely, 2^9855885 is an apocalyptic number.

It is an amenable number.

9855885 is a deficient number, since it is larger than the sum of its proper divisors (7126899).

9855885 is a wasteful number, since it uses less digits than its factorization.

9855885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50564.

The product of its digits is 576000, while the sum is 48.

The square root of 9855885 is about 3139.4083837564. The cubic root of 9855885 is about 214.4035025440.

The spelling of 9855885 in words is "nine million, eight hundred fifty-five thousand, eight hundred eighty-five".