209393 has 2 divisors, whose sum is σ = 209394. Its totient is φ = 209392.

The previous prime is 209381. The next prime is 209401. The reversal of 209393 is 393902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187489 + 21904 = 433^2 + 148^2 .

It is a cyclic number.

It is not a de Polignac number, because 209393 - 2¹² = 205297 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (209333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104696 + 104697.

It is an arithmetic number, because the mean of its divisors is an integer number (104697).

2²⁰⁹³⁹³ is an apocalyptic number.

It is an amenable number.

209393 is a deficient number, since it is larger than the sum of its proper divisors (1).

209393 is an equidigital number, since it uses as much as digits as its factorization.

209393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 209393 is about 457.5947989215. The cubic root of 209393 is about 59.3818950441.

The spelling of 209393 in words is "two hundred nine thousand, three hundred ninety-three".