205984329 has 8 divisors (see below), whose sum is σ = 275667840. Its totient is φ = 136811856.

The previous prime is 205984321. The next prime is 205984333. The reversal of 205984329 is 923489502.

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

It is not a de Polignac number, because 205984329 - 2³ = 205984321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205984321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126817 + ... + 128430.

It is an arithmetic number, because the mean of its divisors is an integer number (34458480).

Almost surely, 2^205984329 is an apocalyptic number.

It is an amenable number.

205984329 is a deficient number, since it is larger than the sum of its proper divisors (69683511).

205984329 is a wasteful number, since it uses less digits than its factorization.

205984329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255519.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 205984329 is about 14352.1541588711. The cubic root of 205984329 is about 590.5790819317.

The spelling of 205984329 in words is "two hundred five million, nine hundred eighty-four thousand, three hundred twenty-nine".