206734939 has 8 divisors (see below), whose sum is σ = 220763520. Its totient is φ = 193166400.

The previous prime is 206734937. The next prime is 206734951. The reversal of 206734939 is 939437602.

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

It is a cyclic number.

It is not a de Polignac number, because 206734939 - 2¹ = 206734937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206734895 and 206734904.

It is not an unprimeable number, because it can be changed into a prime (206734933) 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, 114082 + ... + 115879.

It is an arithmetic number, because the mean of its divisors is an integer number (27595440).

Almost surely, 2^206734939 is an apocalyptic number.

206734939 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

206734939 is a deficient number, since it is larger than the sum of its proper divisors (14028581).

206734939 is a wasteful number, since it uses less digits than its factorization.

206734939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230021.

The product of its (nonzero) digits is 244944, while the sum is 43.

The square root of 206734939 is about 14378.2801127256. The cubic root of 206734939 is about 591.2955720274.

The spelling of 206734939 in words is "two hundred six million, seven hundred thirty-four thousand, nine hundred thirty-nine".