9665998933 has 2 divisors, whose sum is σ = 9665998934. Its totient is φ = 9665998932.

The previous prime is 9665998919. The next prime is 9665998999. The reversal of 9665998933 is 3398995669.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8616109329 + 1049889604 = 92823^2 + 32402^2 .

It is an emirp because it is prime and its reverse (3398995669) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9665998933 - 2²⁵ = 9632444501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9665990933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4832999466 + 4832999467.

It is an arithmetic number, because the mean of its divisors is an integer number (4832999467).

Almost surely, 2^9665998933 is an apocalyptic number.

It is an amenable number.

9665998933 is a deficient number, since it is larger than the sum of its proper divisors (1).

9665998933 is an equidigital number, since it uses as much as digits as its factorization.

9665998933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85030560, while the sum is 67.

The square root of 9665998933 is about 98315.8122226532. The cubic root of 9665998933 is about 2130.1764592580.

The spelling of 9665998933 in words is "nine billion, six hundred sixty-five million, nine hundred ninety-eight thousand, nine hundred thirty-three".