889645189 has 8 divisors (see below), whose sum is σ = 958247840. Its totient is φ = 823220496.

The previous prime is 889645181. The next prime is 889645199. The reversal of 889645189 is 981546988.

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 889645189 - 2³ = 889645181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889645181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543642 + ... + 545275.

It is an arithmetic number, because the mean of its divisors is an integer number (119780980).

Almost surely, 2^889645189 is an apocalyptic number.

It is an amenable number.

889645189 is a deficient number, since it is larger than the sum of its proper divisors (68602651).

889645189 is a wasteful number, since it uses less digits than its factorization.

889645189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088979.

The product of its digits is 4976640, while the sum is 58.

The square root of 889645189 is about 29826.9205416852. The cubic root of 889645189 is about 961.7723296131.

The spelling of 889645189 in words is "eight hundred eighty-nine million, six hundred forty-five thousand, one hundred eighty-nine".