209059393 has 2 divisors, whose sum is σ = 209059394. Its totient is φ = 209059392.

The previous prime is 209059391. The next prime is 209059457. The reversal of 209059393 is 393950902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153958464 + 55100929 = 12408^2 + 7423^2 .

It is a cyclic number.

It is not a de Polignac number, because 209059393 - 2¹ = 209059391 is a prime.

Together with 209059391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (209059391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104529696 + 104529697.

It is an arithmetic number, because the mean of its divisors is an integer number (104529697).

Almost surely, 2^209059393 is an apocalyptic number.

It is an amenable number.

209059393 is a deficient number, since it is larger than the sum of its proper divisors (1).

209059393 is an equidigital number, since it uses as much as digits as its factorization.

209059393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65610, while the sum is 40.

The square root of 209059393 is about 14458.8862987438. The cubic root of 209059393 is about 593.5034234055.

The spelling of 209059393 in words is "two hundred nine million, fifty-nine thousand, three hundred ninety-three".