9809980 has 12 divisors (see below), whose sum is σ = 20601000. Its totient is φ = 3923984.

The previous prime is 9809971. The next prime is 9810001. The reversal of 9809980 is 899089.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 245230 + ... + 245269.

It is an arithmetic number, because the mean of its divisors is an integer number (1716750).

Almost surely, 2^9809980 is an apocalyptic number.

It is an amenable number.

9809980 is an abundant number, since it is smaller than the sum of its proper divisors (10791020).

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

9809980 is a wasteful number, since it uses less digits than its factorization.

9809980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490508 (or 490506 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 9809980 is about 3132.0887599173. The cubic root of 9809980 is about 214.0701141554.

The spelling of 9809980 in words is "nine million, eight hundred nine thousand, nine hundred eighty".