206346939 has 16 divisors (see below), whose sum is σ = 278528544. Its totient is φ = 135872000.

The previous prime is 206346911. The next prime is 206346947. The reversal of 206346939 is 939643602.

It is a cyclic number.

It is not a de Polignac number, because 206346939 - 2⁸ = 206346683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206346939.

It is not an unprimeable number, because it can be changed into a prime (206346949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233779 + ... + 234659.

It is an arithmetic number, because the mean of its divisors is an integer number (17408034).

Almost surely, 2^206346939 is an apocalyptic number.

206346939 is a deficient number, since it is larger than the sum of its proper divisors (72181605).

206346939 is a wasteful number, since it uses less digits than its factorization.

206346939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758.

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 206346939 is about 14364.7812026498. The cubic root of 206346939 is about 590.9254259849.

The spelling of 206346939 in words is "two hundred six million, three hundred forty-six thousand, nine hundred thirty-nine".