9986980 has 12 divisors (see below), whose sum is σ = 20972700. Its totient is φ = 3994784.

The previous prime is 9986941. The next prime is 9986987. The reversal of 9986980 is 896899.

It can be written as a sum of positive squares in 2 ways, for example, as 5560164 + 4426816 = 2358^2 + 2104^2 .

It is not an unprimeable number, because it can be changed into a prime (9986987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249655 + ... + 249694.

It is an arithmetic number, because the mean of its divisors is an integer number (1747725).

Almost surely, 2^9986980 is an apocalyptic number.

It is an amenable number.

9986980 is an abundant number, since it is smaller than the sum of its proper divisors (10985720).

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

9986980 is a wasteful number, since it uses less digits than its factorization.

9986980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499358 (or 499356 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 9986980 is about 3160.2183468868. The cubic root of 9986980 is about 215.3499259282.

The spelling of 9986980 in words is "nine million, nine hundred eighty-six thousand, nine hundred eighty".