404122401 has 6 divisors (see below), whose sum is σ = 583732370. Its totient is φ = 269414928.

The previous prime is 404122391. The next prime is 404122427. The reversal of 404122401 is 104221404.

It can be written as a sum of positive squares in only one way, i.e., 275526801 + 128595600 = 16599^2 + 11340^2 .

It is not a de Polignac number, because 404122401 - 2¹⁵ = 404089633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404102401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22451236 + ... + 22451253.

Almost surely, 2^404122401 is an apocalyptic number.

It is an amenable number.

404122401 is a deficient number, since it is larger than the sum of its proper divisors (179609969).

404122401 is a wasteful number, since it uses less digits than its factorization.

404122401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44902495 (or 44902492 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 404122401 is about 20102.7958503289. The cubic root of 404122401 is about 739.3288295956.

Adding to 404122401 its reverse (104221404), we get a palindrome (508343805).

The spelling of 404122401 in words is "four hundred four million, one hundred twenty-two thousand, four hundred one".