204409149 has 16 divisors (see below), whose sum is σ = 319079040. Its totient is φ = 113955840.

The previous prime is 204409111. The next prime is 204409193. The reversal of 204409149 is 941904402.

204409149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204409149 - 2⁷ = 204409021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204409199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117844 + ... + 119565.

It is an arithmetic number, because the mean of its divisors is an integer number (19942440).

Almost surely, 2^204409149 is an apocalyptic number.

It is an amenable number.

204409149 is a deficient number, since it is larger than the sum of its proper divisors (114669891).

204409149 is a wasteful number, since it uses less digits than its factorization.

204409149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237460.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 204409149 is about 14297.1727624730. The cubic root of 204409149 is about 589.0698251039.

The spelling of 204409149 in words is "two hundred four million, four hundred nine thousand, one hundred forty-nine".