8638189 has 8 divisors (see below), whose sum is σ = 9896000. Its totient is φ = 7386336.

The previous prime is 8638187. The next prime is 8638199. The reversal of 8638189 is 9818368.

It is a happy number.

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 8638189 - 2¹ = 8638187 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 (8638183) 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, 2257 + ... + 4729.

It is an arithmetic number, because the mean of its divisors is an integer number (1237000).

Almost surely, 2^8638189 is an apocalyptic number.

It is an amenable number.

8638189 is a deficient number, since it is larger than the sum of its proper divisors (1257811).

8638189 is a wasteful number, since it uses less digits than its factorization.

8638189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979.

The product of its digits is 82944, while the sum is 43.

The square root of 8638189 is about 2939.0796178396. The cubic root of 8638189 is about 205.1827757177.

The spelling of 8638189 in words is "eight million, six hundred thirty-eight thousand, one hundred eighty-nine".