443420102989 has 2 divisors, whose sum is σ = 443420102990. Its totient is φ = 443420102988.

The previous prime is 443420102971. The next prime is 443420103013. The reversal of 443420102989 is 989201024344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 436914390025 + 6505712964 = 660995^2 + 80658^2 .

It is a cyclic number.

It is not a de Polignac number, because 443420102989 - 2¹³ = 443420094797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (443420102789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221710051494 + 221710051495.

It is an arithmetic number, because the mean of its divisors is an integer number (221710051495).

Almost surely, 2^443420102989 is an apocalyptic number.

It is an amenable number.

443420102989 is a deficient number, since it is larger than the sum of its proper divisors (1).

443420102989 is an equidigital number, since it uses as much as digits as its factorization.

443420102989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 443420102989 in words is "four hundred forty-three billion, four hundred twenty million, one hundred two thousand, nine hundred eighty-nine".