808189 has 4 divisors (see below), whose sum is σ = 821500. Its totient is φ = 794880.

The previous prime is 808187. The next prime is 808211. The reversal of 808189 is 981808.

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

It can be written as a sum of positive squares in 2 ways, for example, as 99225 + 708964 = 315^2 + 842^2 .

It is a cyclic number.

It is not a de Polignac number, because 808189 - 2¹ = 808187 is a prime.

It is a Duffinian number.

808189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808187) 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, 6564 + ... + 6685.

It is an arithmetic number, because the mean of its divisors is an integer number (205375).

2⁸⁰⁸¹⁸⁹ is an apocalyptic number.

It is an amenable number.

808189 is a deficient number, since it is larger than the sum of its proper divisors (13311).

808189 is a wasteful number, since it uses less digits than its factorization.

808189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13310.

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 808189 is about 898.9933258929. The cubic root of 808189 is about 93.1474517582.

The spelling of 808189 in words is "eight hundred eight thousand, one hundred eighty-nine".