9845940 has 72 divisors (see below), whose sum is σ = 29883168. Its totient is φ = 2421120.

The previous prime is 9845939. The next prime is 9845947. The reversal of 9845940 is 495489.

9845940 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9845947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9655 + ... + 10625.

It is an arithmetic number, because the mean of its divisors is an integer number (415044).

Almost surely, 2^9845940 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 9845940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14941584).

9845940 is an abundant number, since it is smaller than the sum of its proper divisors (20037228).

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

9845940 is a wasteful number, since it uses less digits than its factorization.

9845940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009 (or 994 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 9845940 is about 3137.8240868474. The cubic root of 9845940 is about 214.3313642426.

The spelling of 9845940 in words is "nine million, eight hundred forty-five thousand, nine hundred forty".