805459 has 4 divisors (see below), whose sum is σ = 808920. Its totient is φ = 802000.

The previous prime is 805451. The next prime is 805463. The reversal of 805459 is 954508.

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 805459 - 2³ = 805451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 805459.

It is not an unprimeable number, because it can be changed into a prime (805451) 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, 1354 + ... + 1855.

It is an arithmetic number, because the mean of its divisors is an integer number (202230).

2⁸⁰⁵⁴⁵⁹ is an apocalyptic number.

805459 is a deficient number, since it is larger than the sum of its proper divisors (3461).

805459 is a wasteful number, since it uses less digits than its factorization.

805459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 805459 is about 897.4736764942. The cubic root of 805459 is about 93.0424518103.

The spelling of 805459 in words is "eight hundred five thousand, four hundred fifty-nine".