9904940 has 24 divisors (see below), whose sum is σ = 20865600. Its totient is φ = 3949568.

The previous prime is 9904919. The next prime is 9904949. The reversal of 9904940 is 494099.

It is a self number, because there is not a number n which added to its sum of digits gives 9904940.

It is not an unprimeable number, because it can be changed into a prime (9904949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8429 + ... + 9531.

It is an arithmetic number, because the mean of its divisors is an integer number (869400).

Almost surely, 2^9904940 is an apocalyptic number.

It is an amenable number.

9904940 is an abundant number, since it is smaller than the sum of its proper divisors (10960660).

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

9904940 is a wasteful number, since it uses less digits than its factorization.

9904940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561 (or 1559 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 9904940 is about 3147.2114641377. The cubic root of 9904940 is about 214.7586258186.

The spelling of 9904940 in words is "nine million, nine hundred four thousand, nine hundred forty".