989647673 has 16 divisors (see below), whose sum is σ = 1198387584. Its totient is φ = 797817600.

The previous prime is 989647663. The next prime is 989647679. The reversal of 989647673 is 376746989.

It is a cyclic number.

It is not a de Polignac number, because 989647673 - 2⁶ = 989647609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989647679) 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, 337811 + ... + 340727.

It is an arithmetic number, because the mean of its divisors is an integer number (74899224).

Almost surely, 2^989647673 is an apocalyptic number.

It is an amenable number.

989647673 is a deficient number, since it is larger than the sum of its proper divisors (208739911).

989647673 is a wasteful number, since it uses less digits than its factorization.

989647673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5792.

The product of its digits is 13716864, while the sum is 59.

The square root of 989647673 is about 31458.6661033172. Note that the first 3 decimals coincide. The cubic root of 989647673 is about 996.5372475188.

The spelling of 989647673 in words is "nine hundred eighty-nine million, six hundred forty-seven thousand, six hundred seventy-three".