206040379 has 2 divisors, whose sum is σ = 206040380. Its totient is φ = 206040378.

The previous prime is 206040361. The next prime is 206040451. The reversal of 206040379 is 973040602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206040379 - 2¹¹ = 206038331 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206040379.

It is not a weakly prime, because it can be changed into another prime (206040349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103020189 + 103020190.

It is an arithmetic number, because the mean of its divisors is an integer number (103020190).

Almost surely, 2^206040379 is an apocalyptic number.

206040379 is a deficient number, since it is larger than the sum of its proper divisors (1).

206040379 is an equidigital number, since it uses as much as digits as its factorization.

206040379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 206040379 is about 14354.1066946014. The cubic root of 206040379 is about 590.6326441869.

The spelling of 206040379 in words is "two hundred six million, forty thousand, three hundred seventy-nine".