9943769089 has 2 divisors, whose sum is σ = 9943769090. Its totient is φ = 9943769088.

The previous prime is 9943769063. The next prime is 9943769093. The reversal of 9943769089 is 9809673499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9845600625 + 98168464 = 99225^2 + 9908^2 .

It is a cyclic number.

It is not a de Polignac number, because 9943769089 - 2¹⁵ = 9943736321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9943769089.

It is not a weakly prime, because it can be changed into another prime (9943719089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4971884544 + 4971884545.

It is an arithmetic number, because the mean of its divisors is an integer number (4971884545).

Almost surely, 2^9943769089 is an apocalyptic number.

It is an amenable number.

9943769089 is a deficient number, since it is larger than the sum of its proper divisors (1).

9943769089 is an equidigital number, since it uses as much as digits as its factorization.

9943769089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26453952, while the sum is 64.

The square root of 9943769089 is about 99718.4490904266. The cubic root of 9943769089 is about 2150.3889030760.

The spelling of 9943769089 in words is "nine billion, nine hundred forty-three million, seven hundred sixty-nine thousand, eighty-nine".