799980 has 48 divisors (see below), whose sum is σ = 2284800. Its totient is φ = 209088.

The previous prime is 799979. The next prime is 799991. The reversal of 799980 is 89997.

It is a happy number.

799980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 799980.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3921 + ... + 4119.

It is an arithmetic number, because the mean of its divisors is an integer number (47600).

2⁷⁹⁹⁹⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 799980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1142400).

799980 is an abundant number, since it is smaller than the sum of its proper divisors (1484820).

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

799980 is a wasteful number, since it uses less digits than its factorization.

799980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 799980 is about 894.4160105902. The cubic root of 799980 is about 92.8310030677.

The spelling of 799980 in words is "seven hundred ninety-nine thousand, nine hundred eighty".