8189985 has 16 divisors (see below), whose sum is σ = 13383936. Its totient is φ = 4274688.

The previous prime is 8189981. The next prime is 8189999. The reversal of 8189985 is 5899818.

8189985 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8189985 - 2² = 8189981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8189981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5104 + ... + 6513.

It is an arithmetic number, because the mean of its divisors is an integer number (836496).

Almost surely, 2^8189985 is an apocalyptic number.

It is an amenable number.

8189985 is a deficient number, since it is larger than the sum of its proper divisors (5193951).

8189985 is a wasteful number, since it uses less digits than its factorization.

8189985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11672.

The product of its digits is 207360, while the sum is 48.

The square root of 8189985 is about 2861.8149835375. The cubic root of 8189985 is about 201.5708383667.

The spelling of 8189985 in words is "eight million, one hundred eighty-nine thousand, nine hundred eighty-five".