989120941077 has 16 divisors (see below), whose sum is σ = 1321368671360. Its totient is φ = 658144222272.

The previous prime is 989120941009. The next prime is 989120941087. The reversal of 989120941077 is 770149021989.

It is not a de Polignac number, because 989120941077 - 2²³ = 989112552469 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989120941007) 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 in 15 ways as a sum of consecutive naturals, for example, 6301968 + ... + 6457014.

It is an arithmetic number, because the mean of its divisors is an integer number (82585541960).

Almost surely, 2^989120941077 is an apocalyptic number.

It is an amenable number.

989120941077 is a deficient number, since it is larger than the sum of its proper divisors (332247730283).

989120941077 is a wasteful number, since it uses less digits than its factorization.

989120941077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159132.

The product of its (nonzero) digits is 2286144, while the sum is 57.

The spelling of 989120941077 in words is "nine hundred eighty-nine billion, one hundred twenty million, nine hundred forty-one thousand, seventy-seven".