7989800 has 96 divisors (see below), whose sum is σ = 22915200. Its totient is φ = 2522880.

The previous prime is 7989769. The next prime is 7989851. The reversal of 7989800 is 89897.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17981 + ... + 18419.

It is an arithmetic number, because the mean of its divisors is an integer number (238700).

Almost surely, 2^7989800 is an apocalyptic number.

7989800 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7989800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11457600).

7989800 is an abundant number, since it is smaller than the sum of its proper divisors (14925400).

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

7989800 is a wasteful number, since it uses less digits than its factorization.

7989800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 7989800 is about 2826.6234273422. The cubic root of 7989800 is about 199.9149638494.

The spelling of 7989800 in words is "seven million, nine hundred eighty-nine thousand, eight hundred".