204739147 has 4 divisors (see below), whose sum is σ = 206043376. Its totient is φ = 203434920.

The previous prime is 204739133. The next prime is 204739151. The reversal of 204739147 is 741937402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204739147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204739187) 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 3 ways as a sum of consecutive naturals, for example, 651879 + ... + 652192.

It is an arithmetic number, because the mean of its divisors is an integer number (51510844).

Almost surely, 2^204739147 is an apocalyptic number.

204739147 is a deficient number, since it is larger than the sum of its proper divisors (1304229).

204739147 is a wasteful number, since it uses less digits than its factorization.

204739147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304228.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 204739147 is about 14308.7087817175. The cubic root of 204739147 is about 589.3866526531.

The spelling of 204739147 in words is "two hundred four million, seven hundred thirty-nine thousand, one hundred forty-seven".