9799980 has 48 divisors (see below), whose sum is σ = 27597024. Its totient is φ = 2598400.

The previous prime is 9799969. The next prime is 9799987. The reversal of 9799980 is 899979.

It is not an unprimeable number, because it can be changed into a prime (9799987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13630 + ... + 14330.

It is an arithmetic number, because the mean of its divisors is an integer number (574938).

Almost surely, 2^9799980 is an apocalyptic number.

It is an amenable number.

9799980 is an abundant number, since it is smaller than the sum of its proper divisors (17797044).

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

9799980 is a wasteful number, since it uses less digits than its factorization.

9799980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 51.

The square root of 9799980 is about 3130.4919741153. The cubic root of 9799980 is about 213.9973505364.

The spelling of 9799980 in words is "nine million, seven hundred ninety-nine thousand, nine hundred eighty".