206961239 has 8 divisors (see below), whose sum is σ = 219412608. Its totient is φ = 194870880.

The previous prime is 206961217. The next prime is 206961241. The reversal of 206961239 is 932169602.

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 206961239 - 2¹² = 206957143 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 (206961259) 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 in 7 ways as a sum of consecutive naturals, for example, 89072 + ... + 91365.

It is an arithmetic number, because the mean of its divisors is an integer number (27426576).

Almost surely, 2^206961239 is an apocalyptic number.

206961239 is a deficient number, since it is larger than the sum of its proper divisors (12451369).

206961239 is a wasteful number, since it uses less digits than its factorization.

206961239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180505.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 206961239 is about 14386.1474690064. The cubic root of 206961239 is about 591.5112449621.

The spelling of 206961239 in words is "two hundred six million, nine hundred sixty-one thousand, two hundred thirty-nine".