8529989 has 4 divisors (see below), whose sum is σ = 9186156. Its totient is φ = 7873824.

The previous prime is 8529959. The next prime is 8530001. The reversal of 8529989 is 9899258.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3045025 + 5484964 = 1745^2 + 2342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8529989 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 (8529919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328064 + ... + 328089.

It is an arithmetic number, because the mean of its divisors is an integer number (2296539).

Almost surely, 2^8529989 is an apocalyptic number.

It is an amenable number.

8529989 is a deficient number, since it is larger than the sum of its proper divisors (656167).

8529989 is a wasteful number, since it uses less digits than its factorization.

8529989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656166.

The product of its digits is 466560, while the sum is 50.

The square root of 8529989 is about 2920.6144901373. The cubic root of 8529989 is about 204.3224827107.

The spelling of 8529989 in words is "eight million, five hundred twenty-nine thousand, nine hundred eighty-nine".