988444444489 has 2 divisors, whose sum is σ = 988444444490. Its totient is φ = 988444444488.

The previous prime is 988444444363. The next prime is 988444444573. The reversal of 988444444489 is 984444444889.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 641160525625 + 347283918864 = 800725^2 + 589308^2 .

It is a cyclic number.

It is not a de Polignac number, because 988444444489 - 2¹¹ = 988444442441 is a prime.

It is a super-2 number, since 2×988444444489² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (988444144489) 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, 494222222244 + 494222222245.

It is an arithmetic number, because the mean of its divisors is an integer number (494222222245).

Almost surely, 2^988444444489 is an apocalyptic number.

It is an amenable number.

988444444489 is a deficient number, since it is larger than the sum of its proper divisors (1).

988444444489 is an equidigital number, since it uses as much as digits as its factorization.

988444444489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 679477248, while the sum is 70.

The spelling of 988444444489 in words is "nine hundred eighty-eight billion, four hundred forty-four million, four hundred forty-four thousand, four hundred eighty-nine".