9855845 has 8 divisors (see below), whose sum is σ = 12341376. Its totient is φ = 7541776.

The previous prime is 9855823. The next prime is 9855863. The reversal of 9855845 is 5485589.

9855845 is digitally balanced in base 2, 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 a cyclic number.

It is not a de Polignac number, because 9855845 - 2¹² = 9851749 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 9855796 and 9855805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42737 + ... + 42966.

It is an arithmetic number, because the mean of its divisors is an integer number (1542672).

Almost surely, 2^9855845 is an apocalyptic number.

It is an amenable number.

9855845 is a deficient number, since it is larger than the sum of its proper divisors (2485531).

9855845 is a wasteful number, since it uses less digits than its factorization.

9855845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85731.

The product of its digits is 288000, while the sum is 44.

The square root of 9855845 is about 3139.4020131229. The cubic root of 9855845 is about 214.4032124922.

It can be divided in two parts, 985584 and 5, that added together give a palindrome (985589).

The spelling of 9855845 in words is "nine million, eight hundred fifty-five thousand, eight hundred forty-five".