989143939170 has 96 divisors (see below), whose sum is σ = 2667327691392. Its totient is φ = 263741795712.

The previous prime is 989143939111. The next prime is 989143939181. The reversal of 989143939170 is 71939341989.

989143939170 is a `hidden beast` number, since 9 + 8 + 91 + 4 + 393 + 91 + 70 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 989143939098 and 989143939107.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 28809934 + ... + 28844246.

It is an arithmetic number, because the mean of its divisors is an integer number (27784663452).

Almost surely, 2^989143939170 is an apocalyptic number.

989143939170 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

989143939170 is an abundant number, since it is smaller than the sum of its proper divisors (1678183752222).

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

989143939170 is a wasteful number, since it uses less digits than its factorization.

989143939170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46198 (or 46186 counting only the distinct ones).

The product of its (nonzero) digits is 13226976, while the sum is 63.

The spelling of 989143939170 in words is "nine hundred eighty-nine billion, one hundred forty-three million, nine hundred thirty-nine thousand, one hundred seventy".