209964341 has 2 divisors, whose sum is σ = 209964342. Its totient is φ = 209964340.

The previous prime is 209964329. The next prime is 209964343. The reversal of 209964341 is 143469902.

209964341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175695025 + 34269316 = 13255^2 + 5854^2 .

It is a cyclic number.

It is not a de Polignac number, because 209964341 - 2⁶ = 209964277 is a prime.

Together with 209964343, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 209964295 and 209964304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209964343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104982170 + 104982171.

It is an arithmetic number, because the mean of its divisors is an integer number (104982171).

Almost surely, 2^209964341 is an apocalyptic number.

It is an amenable number.

209964341 is a deficient number, since it is larger than the sum of its proper divisors (1).

209964341 is an equidigital number, since it uses as much as digits as its factorization.

209964341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 209964341 is about 14490.1463415661. The cubic root of 209964341 is about 594.3585498301.

The spelling of 209964341 in words is "two hundred nine million, nine hundred sixty-four thousand, three hundred forty-one".