989294804689 has 9 divisors (see below), whose sum is σ = 1012880492649. Its totient is φ = 966246174180.

The previous prime is 989294804677. The next prime is 989294804791. The reversal of 989294804689 is 986408492989.

The square root of 989294804689 is 994633.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 989294804689 - 2¹¹ = 989294802641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989294804089) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 42757654 + ... + 42780784.

It is an arithmetic number, because the mean of its divisors is an integer number (112542276961).

Almost surely, 2^989294804689 is an apocalyptic number.

989294804689 is the 994633-rd square number.

989294804689 is the 497317-th centered octagonal number.

It is an amenable number.

989294804689 is a deficient number, since it is larger than the sum of its proper divisors (23585687960).

989294804689 is an frugal number, since it uses more digits than its factorization.

989294804689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46348 (or 23174 counting only the distinct ones).

The product of its (nonzero) digits is 644972544, while the sum is 76.

The spelling of 989294804689 in words is "nine hundred eighty-nine billion, two hundred ninety-four million, eight hundred four thousand, six hundred eighty-nine".