989876766 has 16 divisors (see below), whose sum is σ = 1981319184. Its totient is φ = 329697984.

The previous prime is 989876747. The next prime is 989876773. The reversal of 989876766 is 667678989.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 989876697 and 989876706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56935 + ... + 72258.

It is an arithmetic number, because the mean of its divisors is an integer number (123832449).

Almost surely, 2^989876766 is an apocalyptic number.

989876766 is an abundant number, since it is smaller than the sum of its proper divisors (991442418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

989876766 is a wasteful number, since it uses less digits than its factorization.

989876766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130475.

The product of its digits is 54867456, while the sum is 66.

The square root of 989876766 is about 31462.3070673465. The cubic root of 989876766 is about 996.6141375407.

The spelling of 989876766 in words is "nine hundred eighty-nine million, eight hundred seventy-six thousand, seven hundred sixty-six".