8526989 has 4 divisors (see below), whose sum is σ = 8539356. Its totient is φ = 8514624.

The previous prime is 8526977. The next prime is 8527009. The reversal of 8526989 is 9896258.

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 7382089 + 1144900 = 2717^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 8526989 - 2⁸ = 8526733 is a prime.

It is a super-2 number, since 2×8526989² = 145419082812242, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8526919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5084 + ... + 6549.

It is an arithmetic number, because the mean of its divisors is an integer number (2134839).

Almost surely, 2^8526989 is an apocalyptic number.

It is an amenable number.

8526989 is a deficient number, since it is larger than the sum of its proper divisors (12367).

8526989 is a wasteful number, since it uses less digits than its factorization.

8526989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12366.

The product of its digits is 311040, while the sum is 47.

The square root of 8526989 is about 2920.1008544227. The cubic root of 8526989 is about 204.2985264734.

It can be divided in two parts, 85269 and 89, that added together give a palindrome (85358).

The spelling of 8526989 in words is "eight million, five hundred twenty-six thousand, nine hundred eighty-nine".