8206910009 has 2 divisors, whose sum is σ = 8206910010. Its totient is φ = 8206910008.

The previous prime is 8206909999. The next prime is 8206910057. The reversal of 8206910009 is 9000196028.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7389121600 + 817788409 = 85960^2 + 28597^2 .

It is a cyclic number.

It is not a de Polignac number, because 8206910009 - 2²⁸ = 7938474553 is a prime.

It is not a weakly prime, because it can be changed into another prime (8206990009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4103455004 + 4103455005.

It is an arithmetic number, because the mean of its divisors is an integer number (4103455005).

Almost surely, 2^8206910009 is an apocalyptic number.

It is an amenable number.

8206910009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8206910009 is an equidigital number, since it uses as much as digits as its factorization.

8206910009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 8206910009 is about 90591.9974887407. The cubic root of 8206910009 is about 2017.0959486320.

The spelling of 8206910009 in words is "eight billion, two hundred six million, nine hundred ten thousand, nine".