805879 has 6 divisors (see below), whose sum is σ = 824240. Its totient is φ = 787800.

The previous prime is 805877. The next prime is 805891. The reversal of 805879 is 978508.

It is not a de Polignac number, because 805879 - 2¹ = 805877 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 (805873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7929 + ... + 8029.

2⁸⁰⁵⁸⁷⁹ is an apocalyptic number.

805879 is a deficient number, since it is larger than the sum of its proper divisors (18361).

805879 is an equidigital number, since it uses as much as digits as its factorization.

805879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 805879 is about 897.7076361489. The cubic root of 805879 is about 93.0586210751.

The spelling of 805879 in words is "eight hundred five thousand, eight hundred seventy-nine".