1009707917 has 2 divisors, whose sum is σ = 1009707918. Its totient is φ = 1009707916.

The previous prime is 1009707869. The next prime is 1009707931. The reversal of 1009707917 is 7197079001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 812193001 + 197514916 = 28499^2 + 14054^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009707917 - 2¹⁴ = 1009691533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1009707967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504853958 + 504853959.

It is an arithmetic number, because the mean of its divisors is an integer number (504853959).

Almost surely, 2^1009707917 is an apocalyptic number.

It is an amenable number.

1009707917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009707917 is an equidigital number, since it uses as much as digits as its factorization.

1009707917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27783, while the sum is 41.

The square root of 1009707917 is about 31775.9015135684. The cubic root of 1009707917 is about 1003.2255569294.

The spelling of 1009707917 in words is "one billion, nine million, seven hundred seven thousand, nine hundred seventeen".