204347149 has 4 divisors (see below), whose sum is σ = 207810720. Its totient is φ = 200883580.

The previous prime is 204347131. The next prime is 204347161. The reversal of 204347149 is 941743402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204347149 - 2¹¹ = 204345101 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 (204347179) 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 3 ways as a sum of consecutive naturals, for example, 1731697 + ... + 1731814.

It is an arithmetic number, because the mean of its divisors is an integer number (51952680).

Almost surely, 2^204347149 is an apocalyptic number.

It is an amenable number.

204347149 is a deficient number, since it is larger than the sum of its proper divisors (3463571).

204347149 is an equidigital number, since it uses as much as digits as its factorization.

204347149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463570.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 204347149 is about 14295.0043371802. The cubic root of 204347149 is about 589.0102615235.

The spelling of 204347149 in words is "two hundred four million, three hundred forty-seven thousand, one hundred forty-nine".