8539989 has 8 divisors (see below), whose sum is σ = 11401632. Its totient is φ = 5685840.

The previous prime is 8539961. The next prime is 8539997. The reversal of 8539989 is 9899358.

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

It is not a de Polignac number, because 8539989 - 2¹⁵ = 8507221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8539919) 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 7 ways as a sum of consecutive naturals, for example, 1842 + ... + 4524.

It is an arithmetic number, because the mean of its divisors is an integer number (1425204).

Almost surely, 2^8539989 is an apocalyptic number.

It is an amenable number.

8539989 is a deficient number, since it is larger than the sum of its proper divisors (2861643).

8539989 is a wasteful number, since it uses less digits than its factorization.

8539989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747.

The product of its digits is 699840, while the sum is 51.

The square root of 8539989 is about 2922.3259571786. The cubic root of 8539989 is about 204.4022962915.

The spelling of 8539989 in words is "eight million, five hundred thirty-nine thousand, nine hundred eighty-nine".