9959659471 has 2 divisors, whose sum is σ = 9959659472. Its totient is φ = 9959659470.

The previous prime is 9959659439. The next prime is 9959659487. The reversal of 9959659471 is 1749569599.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9959659471 - 2⁵ = 9959659439 is a prime.

It is a super-3 number, since 3×9959659471³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9959659421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4979829735 + 4979829736.

It is an arithmetic number, because the mean of its divisors is an integer number (4979829736).

Almost surely, 2^9959659471 is an apocalyptic number.

9959659471 is a deficient number, since it is larger than the sum of its proper divisors (1).

9959659471 is an equidigital number, since it uses as much as digits as its factorization.

9959659471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27556200, while the sum is 64.

The square root of 9959659471 is about 99798.0935238745. The cubic root of 9959659471 is about 2151.5337511779.

The spelling of 9959659471 in words is "nine billion, nine hundred fifty-nine million, six hundred fifty-nine thousand, four hundred seventy-one".