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9999130709 is a prime number
BaseRepresentation
bin10010100111111111…
…01010000001010101
3221210212010110200102
421103333222001111
5130434234140314
64332112023445
7502534131401
oct112377520125
927725113612
109999130709
114271280997
121b30831b85
13c347748b9
146abdb8101
153d7c8a5de
hex253fea055

9999130709 has 2 divisors, whose sum is σ = 9999130710. Its totient is φ = 9999130708.

The previous prime is 9999130663. The next prime is 9999130711. The reversal of 9999130709 is 9070319999.

It is a happy number.

9999130709 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9763416100 + 235714609 = 98810^2 + 15353^2 .

It is a cyclic number.

It is not a de Polignac number, because 9999130709 - 216 = 9999065173 is a prime.

It is a super-2 number, since 2×99991307092 (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 9999130711, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999565354 + 4999565355.

It is an arithmetic number, because the mean of its divisors is an integer number (4999565355).

Almost surely, 29999130709 is an apocalyptic number.

It is an amenable number.

9999130709 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999130709 is an equidigital number, since it uses as much as digits as its factorization.

9999130709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1240029, while the sum is 56.

The square root of 9999130709 is about 99995.6534505375. The cubic root of 9999130709 is about 2154.3722605333.

The spelling of 9999130709 in words is "nine billion, nine hundred ninety-nine million, one hundred thirty thousand, seven hundred nine".