9873840 has 40 divisors (see below), whose sum is σ = 30609648. Its totient is φ = 2632960.

The previous prime is 9873839. The next prime is 9873859. The reversal of 9873840 is 483789.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

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, 20331 + ... + 20810.

Almost surely, 2^9873840 is an apocalyptic number.

It is an amenable number.

9873840 is an abundant number, since it is smaller than the sum of its proper divisors (20735808).

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

9873840 is a wasteful number, since it uses less digits than its factorization.

9873840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41157 (or 41151 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 9873840 is about 3142.2666977836. The cubic root of 9873840 is about 214.5336203896.

The spelling of 9873840 in words is "nine million, eight hundred seventy-three thousand, eight hundred forty".