8520829 has 2 divisors, whose sum is σ = 8520830. Its totient is φ = 8520828.

The previous prime is 8520821. The next prime is 8520851. The reversal of 8520829 is 9280258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8421604 + 99225 = 2902^2 + 315^2 .

It is a cyclic number.

It is not a de Polignac number, because 8520829 - 2³ = 8520821 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8520794 and 8520803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8520821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4260414 + 4260415.

It is an arithmetic number, because the mean of its divisors is an integer number (4260415).

Almost surely, 2^8520829 is an apocalyptic number.

It is an amenable number.

8520829 is a deficient number, since it is larger than the sum of its proper divisors (1).

8520829 is an equidigital number, since it uses as much as digits as its factorization.

8520829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 8520829 is about 2919.0459057713. The cubic root of 8520829 is about 204.2493187131.

The spelling of 8520829 in words is "eight million, five hundred twenty thousand, eight hundred twenty-nine".