206393961 has 8 divisors (see below), whose sum is σ = 275647744. Its totient is φ = 137368080.

The previous prime is 206393933. The next prime is 206394077. The reversal of 206393961 is 169393602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206393961 - 2⁷ = 206393833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206393921) 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 7 ways as a sum of consecutive naturals, for example, 54850 + ... + 58491.

It is an arithmetic number, because the mean of its divisors is an integer number (34455968).

Almost surely, 2^206393961 is an apocalyptic number.

It is an amenable number.

206393961 is a deficient number, since it is larger than the sum of its proper divisors (69253783).

206393961 is a wasteful number, since it uses less digits than its factorization.

206393961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113951.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 206393961 is about 14366.4178207374. The cubic root of 206393961 is about 590.9703089461.

The spelling of 206393961 in words is "two hundred six million, three hundred ninety-three thousand, nine hundred sixty-one".