8520959 has 4 divisors (see below), whose sum is σ = 8702304. Its totient is φ = 8339616.

The previous prime is 8520947. The next prime is 8520973. The reversal of 8520959 is 9590258.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9590258 = 2 ⋅4795129.

It is a cyclic number.

It is not a de Polignac number, because 8520959 - 2⁴ = 8520943 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 (8520929) 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 3 ways as a sum of consecutive naturals, for example, 90602 + ... + 90695.

It is an arithmetic number, because the mean of its divisors is an integer number (2175576).

Almost surely, 2^8520959 is an apocalyptic number.

8520959 is a deficient number, since it is larger than the sum of its proper divisors (181345).

8520959 is a wasteful number, since it uses less digits than its factorization.

8520959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181344.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 8520959 is about 2919.0681732361. The cubic root of 8520959 is about 204.2503574335.

The spelling of 8520959 in words is "eight million, five hundred twenty thousand, nine hundred fifty-nine".