8199980 has 12 divisors (see below), whose sum is σ = 17220000. Its totient is φ = 3279984.

The previous prime is 8199979. The next prime is 8200007. The reversal of 8199980 is 899918.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204980 + ... + 205019.

It is an arithmetic number, because the mean of its divisors is an integer number (1435000).

Almost surely, 2^8199980 is an apocalyptic number.

It is an amenable number.

8199980 is an abundant number, since it is smaller than the sum of its proper divisors (9020020).

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

8199980 is a wasteful number, since it uses less digits than its factorization.

8199980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410008 (or 410006 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 44.

The square root of 8199980 is about 2863.5607205017. The cubic root of 8199980 is about 201.6528035762.

The spelling of 8199980 in words is "eight million, one hundred ninety-nine thousand, nine hundred eighty".