440511409997 has 2 divisors, whose sum is σ = 440511409998. Its totient is φ = 440511409996.

The previous prime is 440511409991. The next prime is 440511410029. The reversal of 440511409997 is 799904115044.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338478440521 + 102032969476 = 581789^2 + 319426^2 .

It is a cyclic number.

It is not a de Polignac number, because 440511409997 - 2³⁸ = 165633503053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440511409991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220255704998 + 220255704999.

It is an arithmetic number, because the mean of its divisors is an integer number (220255704999).

Almost surely, 2^440511409997 is an apocalyptic number.

It is an amenable number.

440511409997 is a deficient number, since it is larger than the sum of its proper divisors (1).

440511409997 is an equidigital number, since it uses as much as digits as its factorization.

440511409997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 440511409997 in words is "four hundred forty billion, five hundred eleven million, four hundred nine thousand, nine hundred ninety-seven".