9901700009 has 2 divisors, whose sum is σ = 9901700010. Its totient is φ = 9901700008.

The previous prime is 9901699979. The next prime is 9901700041. The reversal of 9901700009 is 9000071099.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8634126400 + 1267573609 = 92920^2 + 35603^2 .

It is a cyclic number.

It is not a de Polignac number, because 9901700009 - 2²⁰ = 9900651433 is a prime.

It is not a weakly prime, because it can be changed into another prime (9901700069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4950850004 + 4950850005.

It is an arithmetic number, because the mean of its divisors is an integer number (4950850005).

Almost surely, 2^9901700009 is an apocalyptic number.

It is an amenable number.

9901700009 is a deficient number, since it is larger than the sum of its proper divisors (1).

9901700009 is an equidigital number, since it uses as much as digits as its factorization.

9901700009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 9901700009 is about 99507.2862106087. The cubic root of 9901700009 is about 2147.3520680085.

The spelling of 9901700009 in words is "nine billion, nine hundred one million, seven hundred thousand, nine".