799855 has 8 divisors (see below), whose sum is σ = 1096992. Its totient is φ = 548448.

The previous prime is 799853. The next prime is 799859. The reversal of 799855 is 558997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 799855 - 2¹ = 799853 is a prime.

It is a Duffinian number.

799855 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11392 + ... + 11461.

It is an arithmetic number, because the mean of its divisors is an integer number (137124).

2⁷⁹⁹⁸⁵⁵ is an apocalyptic number.

799855 is a deficient number, since it is larger than the sum of its proper divisors (297137).

799855 is a wasteful number, since it uses less digits than its factorization.

799855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22865.

The product of its digits is 113400, while the sum is 43.

The square root of 799855 is about 894.3461298625. The cubic root of 799855 is about 92.8261677469.

The spelling of 799855 in words is "seven hundred ninety-nine thousand, eight hundred fifty-five".