799813 has 4 divisors (see below), whose sum is σ = 914080. Its totient is φ = 685548.

The previous prime is 799807. The next prime is 799817. The reversal of 799813 is 318997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 799813 - 2⁹ = 799301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57123 + ... + 57136.

It is an arithmetic number, because the mean of its divisors is an integer number (228520).

2⁷⁹⁹⁸¹³ is an apocalyptic number.

It is an amenable number.

799813 is a deficient number, since it is larger than the sum of its proper divisors (114267).

799813 is a wasteful number, since it uses less digits than its factorization.

799813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114266.

The product of its digits is 13608, while the sum is 37.

The square root of 799813 is about 894.3226487124. The cubic root of 799813 is about 92.8245429660.

The spelling of 799813 in words is "seven hundred ninety-nine thousand, eight hundred thirteen".