9980540 has 12 divisors (see below), whose sum is σ = 20959176. Its totient is φ = 3992208.

The previous prime is 9980539. The next prime is 9980599. The reversal of 9980540 is 450899.

It is a super-2 number, since 2×9980540² = 199222357383200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9980540.

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, 249494 + ... + 249533.

It is an arithmetic number, because the mean of its divisors is an integer number (1746598).

Almost surely, 2^9980540 is an apocalyptic number.

It is an amenable number.

9980540 is an abundant number, since it is smaller than the sum of its proper divisors (10978636).

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

9980540 is a wasteful number, since it uses less digits than its factorization.

9980540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499036 (or 499034 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 9980540 is about 3159.1992656368. The cubic root of 9980540 is about 215.3036272563.

The spelling of 9980540 in words is "nine million, nine hundred eighty thousand, five hundred forty".