9805940 has 48 divisors (see below), whose sum is σ = 22063104. Its totient is φ = 3648000.

The previous prime is 9805927. The next prime is 9805963. The reversal of 9805940 is 495089.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9805940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51245 + ... + 51435.

It is an arithmetic number, because the mean of its divisors is an integer number (459648).

Almost surely, 2^9805940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9805940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11031552).

9805940 is an abundant number, since it is smaller than the sum of its proper divisors (12257164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9805940 is a wasteful number, since it uses less digits than its factorization.

9805940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 9805940 is about 3131.4437564804. The cubic root of 9805940 is about 214.0407236093.

The spelling of 9805940 in words is "nine million, eight hundred five thousand, nine hundred forty".