206259943 has 2 divisors, whose sum is σ = 206259944. Its totient is φ = 206259942.

The previous prime is 206259931. The next prime is 206259947. The reversal of 206259943 is 349952602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206259943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206259896 and 206259905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206259947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103129971 + 103129972.

It is an arithmetic number, because the mean of its divisors is an integer number (103129972).

Almost surely, 2^206259943 is an apocalyptic number.

206259943 is a deficient number, since it is larger than the sum of its proper divisors (1).

206259943 is an equidigital number, since it uses as much as digits as its factorization.

206259943 is an odious number, because the sum of its binary digits is odd.

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

The square root of 206259943 is about 14361.7527829997. The cubic root of 206259943 is about 590.8423694671.

The spelling of 206259943 in words is "two hundred six million, two hundred fifty-nine thousand, nine hundred forty-three".