9770010209 has 2 divisors, whose sum is σ = 9770010210. Its totient is φ = 9770010208.

The previous prime is 9770010181. The next prime is 9770010221. The reversal of 9770010209 is 9020100779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6618310609 + 3151699600 = 81353^2 + 56140^2 .

It is a cyclic number.

It is not a de Polignac number, because 9770010209 - 2²⁰ = 9768961633 is a prime.

It is not a weakly prime, because it can be changed into another prime (9770019209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4885005104 + 4885005105.

It is an arithmetic number, because the mean of its divisors is an integer number (4885005105).

Almost surely, 2^9770010209 is an apocalyptic number.

It is an amenable number.

9770010209 is a deficient number, since it is larger than the sum of its proper divisors (1).

9770010209 is an equidigital number, since it uses as much as digits as its factorization.

9770010209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 9770010209 is about 98843.3619875407. The cubic root of 9770010209 is about 2137.7898258168.

The spelling of 9770010209 in words is "nine billion, seven hundred seventy million, ten thousand, two hundred nine".