805099 has 2 divisors, whose sum is σ = 805100. Its totient is φ = 805098.

The previous prime is 805097. The next prime is 805109. The reversal of 805099 is 990508.

805099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 805099 - 2¹ = 805097 is a prime.

Together with 805097, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 805099.

It is not a weakly prime, because it can be changed into another prime (805097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402549 + 402550.

It is an arithmetic number, because the mean of its divisors is an integer number (402550).

2⁸⁰⁵⁰⁹⁹ is an apocalyptic number.

805099 is a deficient number, since it is larger than the sum of its proper divisors (1).

805099 is an equidigital number, since it uses as much as digits as its factorization.

805099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 805099 is about 897.2730910932. The cubic root of 805099 is about 93.0285879662.

The spelling of 805099 in words is "eight hundred five thousand, ninety-nine".