989523109441 has 2 divisors, whose sum is σ = 989523109442. Its totient is φ = 989523109440.

The previous prime is 989523109439. The next prime is 989523109511. The reversal of 989523109441 is 144901325989.

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., 937905087025 + 51618022416 = 968455^2 + 227196^2 .

It is a cyclic number.

It is not a de Polignac number, because 989523109441 - 2¹ = 989523109439 is a prime.

Together with 989523109439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (989523109241) 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, 494761554720 + 494761554721.

It is an arithmetic number, because the mean of its divisors is an integer number (494761554721).

Almost surely, 2^989523109441 is an apocalyptic number.

It is an amenable number.

989523109441 is a deficient number, since it is larger than the sum of its proper divisors (1).

989523109441 is an equidigital number, since it uses as much as digits as its factorization.

989523109441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 989523109441 in words is "nine hundred eighty-nine billion, five hundred twenty-three million, one hundred nine thousand, four hundred forty-one".