9899279933 has 2 divisors, whose sum is σ = 9899279934. Its totient is φ = 9899279932.

The previous prime is 9899279903. The next prime is 9899279953. The reversal of 9899279933 is 3399729989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9565231204 + 334048729 = 97802^2 + 18277^2 .

It is a cyclic number.

It is not a de Polignac number, because 9899279933 - 2⁶ = 9899279869 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9899279903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949639966 + 4949639967.

It is an arithmetic number, because the mean of its divisors is an integer number (4949639967).

Almost surely, 2^9899279933 is an apocalyptic number.

It is an amenable number.

9899279933 is a deficient number, since it is larger than the sum of its proper divisors (1).

9899279933 is an equidigital number, since it uses as much as digits as its factorization.

9899279933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59521392, while the sum is 68.

The square root of 9899279933 is about 99495.1251720405. The cubic root of 9899279933 is about 2147.1771088724.

The spelling of 9899279933 in words is "nine billion, eight hundred ninety-nine million, two hundred seventy-nine thousand, nine hundred thirty-three".