9989999933 has 2 divisors, whose sum is σ = 9989999934. Its totient is φ = 9989999932.

The previous prime is 9989999893. The next prime is 9990000001. The reversal of 9989999933 is 3399999899.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9269453284 + 720546649 = 96278^2 + 26843^2 .

It is a cyclic number.

It is not a de Polignac number, because 9989999933 - 2⁶ = 9989999869 is a prime.

It is a super-2 number, since 2×9989999933² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9989998933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994999966 + 4994999967.

It is an arithmetic number, because the mean of its divisors is an integer number (4994999967).

Almost surely, 2^9989999933 is an apocalyptic number.

It is an amenable number.

9989999933 is a deficient number, since it is larger than the sum of its proper divisors (1).

9989999933 is an equidigital number, since it uses as much as digits as its factorization.

9989999933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 344373768, while the sum is 77.

The square root of 9989999933 is about 99949.9871585785. The cubic root of 9989999933 is about 2153.7163008057.

The spelling of 9989999933 in words is "nine billion, nine hundred eighty-nine million, nine hundred ninety-nine thousand, nine hundred thirty-three".