9579988669 has 2 divisors, whose sum is σ = 9579988670. Its totient is φ = 9579988668.

The previous prime is 9579988643. The next prime is 9579988687. The reversal of 9579988669 is 9668899759.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9417732025 + 162256644 = 97045^2 + 12738^2 .

It is a cyclic number.

It is not a de Polignac number, because 9579988669 - 2¹³ = 9579980477 is a prime.

It is a super-2 number, since 2×9579988669² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9579988595 and 9579988604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9579988469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4789994334 + 4789994335.

It is an arithmetic number, because the mean of its divisors is an integer number (4789994335).

Almost surely, 2^9579988669 is an apocalyptic number.

It is an amenable number.

9579988669 is a deficient number, since it is larger than the sum of its proper divisors (1).

9579988669 is an equidigital number, since it uses as much as digits as its factorization.

9579988669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529079040, while the sum is 76.

The square root of 9579988669 is about 97877.4165423260. The cubic root of 9579988669 is about 2123.8393602140.

The spelling of 9579988669 in words is "nine billion, five hundred seventy-nine million, nine hundred eighty-eight thousand, six hundred sixty-nine".