9879669089 has 2 divisors, whose sum is σ = 9879669090. Its totient is φ = 9879669088.

The previous prime is 9879669083. The next prime is 9879669091. The reversal of 9879669089 is 9809669789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7888992400 + 1990676689 = 88820^2 + 44617^2 .

It is a cyclic number.

It is not a de Polignac number, because 9879669089 - 2²⁰ = 9878620513 is a prime.

It is a super-2 number, since 2×9879669089² (a number of 21 digits) contains 22 as substring.

Together with 9879669091, 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 (9879669083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4939834544 + 4939834545.

It is an arithmetic number, because the mean of its divisors is an integer number (4939834545).

Almost surely, 2^9879669089 is an apocalyptic number.

It is an amenable number.

9879669089 is a deficient number, since it is larger than the sum of its proper divisors (1).

9879669089 is an equidigital number, since it uses as much as digits as its factorization.

9879669089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105815808, while the sum is 71.

The square root of 9879669089 is about 99396.5245317964. The cubic root of 9879669089 is about 2145.7582921482.

The spelling of 9879669089 in words is "nine billion, eight hundred seventy-nine million, six hundred sixty-nine thousand, eighty-nine".