8005189 has 4 divisors (see below), whose sum is σ = 8281260. Its totient is φ = 7729120.

The previous prime is 8005187. The next prime is 8005211. The reversal of 8005189 is 9815008.

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 5602689 + 2402500 = 2367^2 + 1550^2 .

It is a cyclic number.

It is not a de Polignac number, because 8005189 - 2¹ = 8005187 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 8005189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8005183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137992 + ... + 138049.

It is an arithmetic number, because the mean of its divisors is an integer number (2070315).

Almost surely, 2^8005189 is an apocalyptic number.

It is an amenable number.

8005189 is a deficient number, since it is larger than the sum of its proper divisors (276071).

8005189 is a wasteful number, since it uses less digits than its factorization.

8005189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276070.

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

The square root of 8005189 is about 2829.3442703213. The cubic root of 8005189 is about 200.0432323208.

The spelling of 8005189 in words is "eight million, five thousand, one hundred eighty-nine".