9807940 has 24 divisors (see below), whose sum is σ = 20889792. Its totient is φ = 3867360.

The previous prime is 9807911. The next prime is 9807943. The reversal of 9807940 is 497089.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9807940.

It is not an unprimeable number, because it can be changed into a prime (9807943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2034 + ... + 4873.

It is an arithmetic number, because the mean of its divisors is an integer number (870408).

Almost surely, 2^9807940 is an apocalyptic number.

It is an amenable number.

9807940 is an abundant number, since it is smaller than the sum of its proper divisors (11081852).

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

9807940 is a wasteful number, since it uses less digits than its factorization.

9807940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6987 (or 6985 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 9807940 is about 3131.7630817161. The cubic root of 9807940 is about 214.0552743934.

The spelling of 9807940 in words is "nine million, eight hundred seven thousand, nine hundred forty".