205093139 has 8 divisors (see below), whose sum is σ = 214329120. Its totient is φ = 195883776.

The previous prime is 205093129. The next prime is 205093153. The reversal of 205093139 is 931390502.

205093139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 205093139 - 2⁸ = 205092883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205093129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10019 + ... + 22595.

It is an arithmetic number, because the mean of its divisors is an integer number (26791140).

Almost surely, 2^205093139 is an apocalyptic number.

205093139 is a deficient number, since it is larger than the sum of its proper divisors (9235981).

205093139 is a wasteful number, since it uses less digits than its factorization.

205093139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13309.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 205093139 is about 14321.0732488875. The cubic root of 205093139 is about 589.7261383416.

The spelling of 205093139 in words is "two hundred five million, ninety-three thousand, one hundred thirty-nine".