8520899 has 4 divisors (see below), whose sum is σ = 8558664. Its totient is φ = 8483136.

The previous prime is 8520887. The next prime is 8520901. The reversal of 8520899 is 9980258.

It is a happy number.

8520899 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8520899 - 2¹² = 8516803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8520829) 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, 18542 + ... + 18995.

It is an arithmetic number, because the mean of its divisors is an integer number (2139666).

Almost surely, 2^8520899 is an apocalyptic number.

8520899 is a deficient number, since it is larger than the sum of its proper divisors (37765).

8520899 is a wasteful number, since it uses less digits than its factorization.

8520899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37764.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 8520899 is about 2919.0578959658. The cubic root of 8520899 is about 204.2498780254.

The spelling of 8520899 in words is "eight million, five hundred twenty thousand, eight hundred ninety-nine".