8820500009 has 2 divisors, whose sum is σ = 8820500010. Its totient is φ = 8820500008.

The previous prime is 8820499937. The next prime is 8820500033. The reversal of 8820500009 is 9000050288.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4983936409 + 3836563600 = 70597^2 + 61940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8820500009 is a prime.

It is not a weakly prime, because it can be changed into another prime (8820500209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4410250004 + 4410250005.

It is an arithmetic number, because the mean of its divisors is an integer number (4410250005).

Almost surely, 2^8820500009 is an apocalyptic number.

It is an amenable number.

8820500009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8820500009 is an equidigital number, since it uses as much as digits as its factorization.

8820500009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 8820500009 is about 93917.5170508676. The cubic root of 8820500009 is about 2066.1621506448.

The spelling of 8820500009 in words is "eight billion, eight hundred twenty million, five hundred thousand, nine".