799940 has 48 divisors (see below), whose sum is σ = 1838592. Its totient is φ = 291456.

The previous prime is 799921. The next prime is 799949. The reversal of 799940 is 49997.

It is a junction number, because it is equal to n+sod(n) for n = 799894 and 799903.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 799940.

It is not an unprimeable number, because it can be changed into a prime (799949) by changing a digit.

799940 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16997 + ... + 17043.

It is an arithmetic number, because the mean of its divisors is an integer number (38304).

2⁷⁹⁹⁹⁴⁰ 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 799940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (919296).

799940 is an abundant number, since it is smaller than the sum of its proper divisors (1038652).

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

799940 is a wasteful number, since it uses less digits than its factorization.

799940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 799940 is about 894.3936493513. The cubic root of 799940 is about 92.8294558198.

The spelling of 799940 in words is "seven hundred ninety-nine thousand, nine hundred forty".