440344140121 has 2 divisors, whose sum is σ = 440344140122. Its totient is φ = 440344140120.

The previous prime is 440344140113. The next prime is 440344140151. The reversal of 440344140121 is 121041443044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255013890121 + 185330250000 = 504989^2 + 430500^2 .

It is a cyclic number.

It is not a de Polignac number, because 440344140121 - 2³ = 440344140113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440344140121.

It is not a weakly prime, because it can be changed into another prime (440344140101) 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, 220172070060 + 220172070061.

It is an arithmetic number, because the mean of its divisors is an integer number (220172070061).

Almost surely, 2^440344140121 is an apocalyptic number.

It is an amenable number.

440344140121 is a deficient number, since it is larger than the sum of its proper divisors (1).

440344140121 is an equidigital number, since it uses as much as digits as its factorization.

440344140121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 440344140121 its reverse (121041443044), we get a palindrome (561385583165).

The spelling of 440344140121 in words is "four hundred forty billion, three hundred forty-four million, one hundred forty thousand, one hundred twenty-one".