216835933 has 2 divisors, whose sum is σ = 216835934. Its totient is φ = 216835932.

The previous prime is 216835891. The next prime is 216835937. The reversal of 216835933 is 339538612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206583129 + 10252804 = 14373^2 + 3202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216835933 is a prime.

It is a super-3 number, since 3×216835933³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216835937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108417966 + 108417967.

It is an arithmetic number, because the mean of its divisors is an integer number (108417967).

Almost surely, 2^216835933 is an apocalyptic number.

It is an amenable number.

216835933 is a deficient number, since it is larger than the sum of its proper divisors (1).

216835933 is an equidigital number, since it uses as much as digits as its factorization.

216835933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 40.

The square root of 216835933 is about 14725.3500128180. The cubic root of 216835933 is about 600.7730156872.

The spelling of 216835933 in words is "two hundred sixteen million, eight hundred thirty-five thousand, nine hundred thirty-three".