404100205 has 4 divisors (see below), whose sum is σ = 484920252. Its totient is φ = 323280160.

The previous prime is 404100167. The next prime is 404100233. The reversal of 404100205 is 502001404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 143568324 + 260531881 = 11982^2 + 16141^2 .

It is not a de Polignac number, because 404100205 - 2⁷ = 404100077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40410016 + ... + 40410025.

It is an arithmetic number, because the mean of its divisors is an integer number (121230063).

Almost surely, 2^404100205 is an apocalyptic number.

It is an amenable number.

404100205 is a deficient number, since it is larger than the sum of its proper divisors (80820047).

404100205 is an equidigital number, since it uses as much as digits as its factorization.

404100205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80820046.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 404100205 is about 20102.2437802351. The cubic root of 404100205 is about 739.3152937270.

Adding to 404100205 its reverse (502001404), we get a palindrome (906101609).

The spelling of 404100205 in words is "four hundred four million, one hundred thousand, two hundred five".