8528989 has 6 divisors (see below), whose sum is σ = 9921534. Its totient is φ = 7310520.

The previous prime is 8528983. The next prime is 8529023. The reversal of 8528989 is 9898258.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7112889 + 1416100 = 2667^2 + 1190^2 .

It is not a de Polignac number, because 8528989 - 2¹¹ = 8526941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 174061 = 8528989 / (8 + 5 + 2 + 8 + 9 + 8 + 9).

8528989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8528983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86982 + ... + 87079.

It is an arithmetic number, because the mean of its divisors is an integer number (1653589).

Almost surely, 2^8528989 is an apocalyptic number.

It is an amenable number.

8528989 is a deficient number, since it is larger than the sum of its proper divisors (1392545).

8528989 is a wasteful number, since it uses less digits than its factorization.

8528989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174075 (or 174068 counting only the distinct ones).

The product of its digits is 414720, while the sum is 49.

The square root of 8528989 is about 2920.4432882698. The cubic root of 8528989 is about 204.3144979224.

The spelling of 8528989 in words is "eight million, five hundred twenty-eight thousand, nine hundred eighty-nine".