805039 has 4 divisors (see below), whose sum is σ = 831040. Its totient is φ = 779040.

The previous prime is 805037. The next prime is 805061. The reversal of 805039 is 930508.

805039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 805039 - 2¹ = 805037 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 (805031) 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, 12954 + ... + 13015.

It is an arithmetic number, because the mean of its divisors is an integer number (207760).

2⁸⁰⁵⁰³⁹ is an apocalyptic number.

805039 is a deficient number, since it is larger than the sum of its proper divisors (26001).

805039 is a wasteful number, since it uses less digits than its factorization.

805039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26000.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 805039 is about 897.2396558334. The cubic root of 805039 is about 93.0262769237.

The spelling of 805039 in words is "eight hundred five thousand, thirty-nine".