204204401 has 4 divisors (see below), whose sum is σ = 206187072. Its totient is φ = 202221732.

The previous prime is 204204379. The next prime is 204204421. The reversal of 204204401 is 104402402.

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 a de Polignac number, because none of the positive numbers 2^k-204204401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204204401.

It is not an unprimeable number, because it can be changed into a prime (204204421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991181 + ... + 991386.

It is an arithmetic number, because the mean of its divisors is an integer number (51546768).

Almost surely, 2^204204401 is an apocalyptic number.

It is an amenable number.

204204401 is a deficient number, since it is larger than the sum of its proper divisors (1982671).

204204401 is a wasteful number, since it uses less digits than its factorization.

204204401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982670.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 204204401 is about 14290.0105318366. The cubic root of 204204401 is about 588.8730772873.

Adding to 204204401 its reverse (104402402), we get a palindrome (308606803).

The spelling of 204204401 in words is "two hundred four million, two hundred four thousand, four hundred one".