805189 has 8 divisors (see below), whose sum is σ = 1003968. Its totient is φ = 627360.

The previous prime is 805187. The next prime is 805213. The reversal of 805189 is 981508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 805189 - 2¹ = 805187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 805189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5152 + ... + 5305.

It is an arithmetic number, because the mean of its divisors is an integer number (125496).

2⁸⁰⁵¹⁸⁹ is an apocalyptic number.

It is an amenable number.

805189 is a deficient number, since it is larger than the sum of its proper divisors (198779).

805189 is a wasteful number, since it uses less digits than its factorization.

805189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10475.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 805189 is about 897.3232416471. The cubic root of 805189 is about 93.0320543146.

The spelling of 805189 in words is "eight hundred five thousand, one hundred eighty-nine".