989659311 has 24 divisors (see below), whose sum is σ = 1349200944. Its totient is φ = 645200640.

The previous prime is 989659241. The next prime is 989659331. The reversal of 989659311 is 113956989.

It is a happy number.

It is not a de Polignac number, because 989659311 - 2⁹ = 989658799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989659331) 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 in 23 ways as a sum of consecutive naturals, for example, 5467641 + ... + 5467821.

It is an arithmetic number, because the mean of its divisors is an integer number (56216706).

Almost surely, 2^989659311 is an apocalyptic number.

989659311 is a deficient number, since it is larger than the sum of its proper divisors (359541633).

989659311 is a wasteful number, since it uses less digits than its factorization.

989659311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 424 counting only the distinct ones).

The product of its digits is 524880, while the sum is 51.

The square root of 989659311 is about 31458.8510756512. The cubic root of 989659311 is about 996.5411538434.

The spelling of 989659311 in words is "nine hundred eighty-nine million, six hundred fifty-nine thousand, three hundred eleven".