9789189 has 8 divisors (see below), whose sum is σ = 13068000. Its totient is φ = 6518256.

The previous prime is 9789173. The next prime is 9789193. The reversal of 9789189 is 9819879.

9789189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9789189 - 2⁴ = 9789173 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9789289) 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, 2187 + ... + 4935.

It is an arithmetic number, because the mean of its divisors is an integer number (1633500).

Almost surely, 2^9789189 is an apocalyptic number.

It is an amenable number.

9789189 is a deficient number, since it is larger than the sum of its proper divisors (3278811).

9789189 is a wasteful number, since it uses less digits than its factorization.

9789189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939.

The product of its digits is 326592, while the sum is 51.

The square root of 9789189 is about 3128.7679683863. The cubic root of 9789189 is about 213.9187757666.

The spelling of 9789189 in words is "nine million, seven hundred eighty-nine thousand, one hundred eighty-nine".