12404401 has 2 divisors, whose sum is σ = 12404402. Its totient is φ = 12404400.

The previous prime is 12404389. The next prime is 12404417. The reversal of 12404401 is 10440421.

It is an a-pointer prime, because the next prime (12404417) can be obtained adding 12404401 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11723776 + 680625 = 3424^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 12404401 - 2⁵ = 12404369 is a prime.

It is not a weakly prime, because it can be changed into another prime (12404201) 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 as a sum of consecutive naturals, namely, 6202200 + 6202201.

It is an arithmetic number, because the mean of its divisors is an integer number (6202201).

Almost surely, 2^12404401 is an apocalyptic number.

It is an amenable number.

12404401 is a deficient number, since it is larger than the sum of its proper divisors (1).

12404401 is an equidigital number, since it uses as much as digits as its factorization.

12404401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 12404401 is about 3521.9882169025. The cubic root of 12404401 is about 231.4862852954.

Adding to 12404401 its reverse (10440421), we get a palindrome (22844822).

The spelling of 12404401 in words is "twelve million, four hundred four thousand, four hundred one".