9869911049 has 2 divisors, whose sum is σ = 9869911050. Its totient is φ = 9869911048.

The previous prime is 9869911043. The next prime is 9869911063. The reversal of 9869911049 is 9401199689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5691193600 + 4178717449 = 75440^2 + 64643^2 .

It is a cyclic number.

It is not a de Polignac number, because 9869911049 - 2²⁸ = 9601475593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9869910985 and 9869911003.

It is not a weakly prime, because it can be changed into another prime (9869911043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4934955524 + 4934955525.

It is an arithmetic number, because the mean of its divisors is an integer number (4934955525).

Almost surely, 2^9869911049 is an apocalyptic number.

It is an amenable number.

9869911049 is a deficient number, since it is larger than the sum of its proper divisors (1).

9869911049 is an equidigital number, since it uses as much as digits as its factorization.

9869911049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 56.

The square root of 9869911049 is about 99347.4259807470. The cubic root of 9869911049 is about 2145.0516121848.

The spelling of 9869911049 in words is "nine billion, eight hundred sixty-nine million, nine hundred eleven thousand, forty-nine".