206939207 has 4 divisors (see below), whose sum is σ = 206974416. Its totient is φ = 206904000.

The previous prime is 206939191. The next prime is 206939233. The reversal of 206939207 is 702939602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 206939207 - 2⁴ = 206939191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206939237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6419 + ... + 21332.

It is an arithmetic number, because the mean of its divisors is an integer number (51743604).

Almost surely, 2^206939207 is an apocalyptic number.

206939207 is a deficient number, since it is larger than the sum of its proper divisors (35209).

206939207 is an equidigital number, since it uses as much as digits as its factorization.

206939207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35208.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 206939207 is about 14385.3817120019. The cubic root of 206939207 is about 591.4902544967.

The spelling of 206939207 in words is "two hundred six million, nine hundred thirty-nine thousand, two hundred seven".