204979404 has 144 divisors (see below), whose sum is σ = 611670528. Its totient is φ = 52056576.

The previous prime is 204979351. The next prime is 204979451. The reversal of 204979404 is 404979402.

It is a happy number.

204979404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2594637 + ... + 2594715.

It is an arithmetic number, because the mean of its divisors is an integer number (4247712).

Almost surely, 2^204979404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204979404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305835264).

204979404 is an abundant number, since it is smaller than the sum of its proper divisors (406691124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204979404 is a wasteful number, since it uses less digits than its factorization.

204979404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 204979404 is about 14317.1018016916. The cubic root of 204979404 is about 589.6171067330.

The spelling of 204979404 in words is "two hundred four million, nine hundred seventy-nine thousand, four hundred four".