989776677989 has 16 divisors (see below), whose sum is σ = 1100638259136. Its totient is φ = 882561936000.

The previous prime is 989776677971. The next prime is 989776677991.

989776677989 is nontrivially palindromic in base 10.

989776677989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 989776677989 - 2⁸ = 989776677733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 989776677898 and 989776677907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989776677949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4044152 + ... + 4281905.

It is an arithmetic number, because the mean of its divisors is an integer number (68789891196).

Almost surely, 2^989776677989 is an apocalyptic number.

It is an amenable number.

989776677989 is a deficient number, since it is larger than the sum of its proper divisors (110861581147).

989776677989 is a wasteful number, since it uses less digits than its factorization.

989776677989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8326276.

The product of its digits is 36294822144, while the sum is 92.

The spelling of 989776677989 in words is "nine hundred eighty-nine billion, seven hundred seventy-six million, six hundred seventy-seven thousand, nine hundred eighty-nine".