424404401 has 2 divisors, whose sum is σ = 424404402. Its totient is φ = 424404400.

The previous prime is 424404341. The next prime is 424404419. The reversal of 424404401 is 104404424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225030001 + 199374400 = 15001^2 + 14120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424404401 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (424404451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212202200 + 212202201.

It is an arithmetic number, because the mean of its divisors is an integer number (212202201).

Almost surely, 2^424404401 is an apocalyptic number.

It is an amenable number.

424404401 is a deficient number, since it is larger than the sum of its proper divisors (1).

424404401 is an equidigital number, since it uses as much as digits as its factorization.

424404401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 424404401 is about 20601.0776659863. The cubic root of 424404401 is about 751.4959186159.

Adding to 424404401 its sum of digits (23), we get a palindrome (424404424).

Adding to 424404401 its reverse (104404424), we get a palindrome (528808825).

The spelling of 424404401 in words is "four hundred twenty-four million, four hundred four thousand, four hundred one".