440304124021 has 2 divisors, whose sum is σ = 440304124022. Its totient is φ = 440304124020.

The previous prime is 440304123977. The next prime is 440304124027. The reversal of 440304124021 is 120421403044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410226159121 + 30077964900 = 640489^2 + 173430^2 .

It is a cyclic number.

It is not a de Polignac number, because 440304124021 - 2²⁹ = 439767253109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440304124027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220152062010 + 220152062011.

It is an arithmetic number, because the mean of its divisors is an integer number (220152062011).

Almost surely, 2^440304124021 is an apocalyptic number.

It is an amenable number.

440304124021 is a deficient number, since it is larger than the sum of its proper divisors (1).

440304124021 is an equidigital number, since it uses as much as digits as its factorization.

440304124021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 440304124021 its reverse (120421403044), we get a palindrome (560725527065).

The spelling of 440304124021 in words is "four hundred forty billion, three hundred four million, one hundred twenty-four thousand, twenty-one".