441840401 has 2 divisors, whose sum is σ = 441840402. Its totient is φ = 441840400.

The previous prime is 441840361. The next prime is 441840403. The reversal of 441840401 is 104048144.

It is a happy number.

It is a Cunningham number, because it is equal to 21020²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 441840400 + 1 = 21020^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 441840401 - 2²⁶ = 374731537 is a prime.

It is a Sophie Germain prime.

Together with 441840403, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (441840403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220920200 + 220920201.

It is an arithmetic number, because the mean of its divisors is an integer number (220920201).

Almost surely, 2^441840401 is an apocalyptic number.

It is an amenable number.

441840401 is a deficient number, since it is larger than the sum of its proper divisors (1).

441840401 is an equidigital number, since it uses as much as digits as its factorization.

441840401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 441840401 is about 21020.0000237869. Note that the first 4 decimals coincide. The cubic root of 441840401 is about 761.6494651637.

Adding to 441840401 its reverse (104048144), we get a palindrome (545888545).

The spelling of 441840401 in words is "four hundred forty-one million, eight hundred forty thousand, four hundred one".