404412401 has 2 divisors, whose sum is σ = 404412402. Its totient is φ = 404412400.

The previous prime is 404412389. The next prime is 404412403. The reversal of 404412401 is 104214404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 301369600 + 103042801 = 17360^2 + 10151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404412401 is a prime.

Together with 404412403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404412403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202206200 + 202206201.

It is an arithmetic number, because the mean of its divisors is an integer number (202206201).

Almost surely, 2^404412401 is an apocalyptic number.

It is an amenable number.

404412401 is a deficient number, since it is larger than the sum of its proper divisors (1).

404412401 is an equidigital number, since it uses as much as digits as its factorization.

404412401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 404412401 is about 20110.0074838375. The cubic root of 404412401 is about 739.5056358424.

Adding to 404412401 its reverse (104214404), we get a palindrome (508626805).

The spelling of 404412401 in words is "four hundred four million, four hundred twelve thousand, four hundred one".