206939093 has 2 divisors, whose sum is σ = 206939094. Its totient is φ = 206939092.

The previous prime is 206939087. The next prime is 206939101. The reversal of 206939093 is 390939602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187772209 + 19166884 = 13703^2 + 4378^2 .

It is a cyclic number.

It is not a de Polignac number, because 206939093 - 2⁴ = 206939077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 206939093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206939893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103469546 + 103469547.

It is an arithmetic number, because the mean of its divisors is an integer number (103469547).

Almost surely, 2^206939093 is an apocalyptic number.

It is an amenable number.

206939093 is a deficient number, since it is larger than the sum of its proper divisors (1).

206939093 is an equidigital number, since it uses as much as digits as its factorization.

206939093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 41.

The square root of 206939093 is about 14385.3777496456. The cubic root of 206939093 is about 591.4901458820.

The spelling of 206939093 in words is "two hundred six million, nine hundred thirty-nine thousand, ninety-three".