217792793 has 2 divisors, whose sum is σ = 217792794. Its totient is φ = 217792792.

The previous prime is 217792781. The next prime is 217792811. The reversal of 217792793 is 397297712.

217792793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150601984 + 67190809 = 12272^2 + 8197^2 .

It is a cyclic number.

It is not a de Polignac number, because 217792793 - 2⁸ = 217792537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (217792733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108896396 + 108896397.

It is an arithmetic number, because the mean of its divisors is an integer number (108896397).

Almost surely, 2^217792793 is an apocalyptic number.

It is an amenable number.

217792793 is a deficient number, since it is larger than the sum of its proper divisors (1).

217792793 is an equidigital number, since it uses as much as digits as its factorization.

217792793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 47.

The square root of 217792793 is about 14757.8044776315. The cubic root of 217792793 is about 601.6554219483.

The spelling of 217792793 in words is "two hundred seventeen million, seven hundred ninety-two thousand, seven hundred ninety-three".