9640760009 has 2 divisors, whose sum is σ = 9640760010. Its totient is φ = 9640760008.

The previous prime is 9640759939. The next prime is 9640760011. The reversal of 9640760009 is 9000670469.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9104976400 + 535783609 = 95420^2 + 23147^2 .

It is a cyclic number.

It is not a de Polignac number, because 9640760009 - 2⁸ = 9640759753 is a prime.

It is a super-2 number, since 2×9640760009² (a number of 21 digits) contains 22 as substring.

Together with 9640760011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9640760069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4820380004 + 4820380005.

It is an arithmetic number, because the mean of its divisors is an integer number (4820380005).

Almost surely, 2^9640760009 is an apocalyptic number.

It is an amenable number.

9640760009 is a deficient number, since it is larger than the sum of its proper divisors (1).

9640760009 is an equidigital number, since it uses as much as digits as its factorization.

9640760009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 9640760009 is about 98187.3719426281. The cubic root of 9640760009 is about 2128.3208061233.

The spelling of 9640760009 in words is "nine billion, six hundred forty million, seven hundred sixty thousand, nine".