443381531969 has 2 divisors, whose sum is σ = 443381531970. Its totient is φ = 443381531968.

The previous prime is 443381531959. The next prime is 443381532007. The reversal of 443381531969 is 969135183344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 443369539600 + 11992369 = 665860^2 + 3463^2 .

It is a cyclic number.

It is not a de Polignac number, because 443381531969 - 2¹² = 443381527873 is a prime.

It is a super-2 number, since 2×443381531969² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (443381531909) 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, 221690765984 + 221690765985.

It is an arithmetic number, because the mean of its divisors is an integer number (221690765985).

Almost surely, 2^443381531969 is an apocalyptic number.

It is an amenable number.

443381531969 is a deficient number, since it is larger than the sum of its proper divisors (1).

443381531969 is an equidigital number, since it uses as much as digits as its factorization.

443381531969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 56.

The spelling of 443381531969 in words is "four hundred forty-three billion, three hundred eighty-one million, five hundred thirty-one thousand, nine hundred sixty-nine".