204424401 has 16 divisors (see below), whose sum is σ = 293912640. Its totient is φ = 125959680.

The previous prime is 204424399. The next prime is 204424411. The reversal of 204424401 is 104424402.

It is not a de Polignac number, because 204424401 - 2¹ = 204424399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204424411) 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 15 ways as a sum of consecutive naturals, for example, 41400 + ... + 46073.

It is an arithmetic number, because the mean of its divisors is an integer number (18369540).

Almost surely, 2^204424401 is an apocalyptic number.

It is an amenable number.

204424401 is a deficient number, since it is larger than the sum of its proper divisors (89488239).

204424401 is a wasteful number, since it uses less digits than its factorization.

204424401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87536.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 204424401 is about 14297.7061446933. The cubic root of 204424401 is about 589.0844758987.

Adding to 204424401 its reverse (104424402), we get a palindrome (308848803).

Subtracting from 204424401 its reverse (104424402), we obtain a palindrome (99999999).

The spelling of 204424401 in words is "two hundred four million, four hundred twenty-four thousand, four hundred one".