805089 has 12 divisors (see below), whose sum is σ = 1112496. Its totient is φ = 517608.

The previous prime is 805081. The next prime is 805097. The reversal of 805089 is 980508.

It is an interprime number because it is at equal distance from previous prime (805081) and next prime (805097).

It is not a de Polignac number, because 805089 - 2³ = 805081 is a prime.

It is a Curzon number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (805081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10152 + ... + 10230.

It is an arithmetic number, because the mean of its divisors is an integer number (92708).

2⁸⁰⁵⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

805089 is a deficient number, since it is larger than the sum of its proper divisors (307407).

805089 is an equidigital number, since it uses as much as digits as its factorization.

805089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 805089 is about 897.2675186364. The cubic root of 805089 is about 93.0282028004.

The spelling of 805089 in words is "eight hundred five thousand, eighty-nine".