8673943889 has 8 divisors (see below), whose sum is σ = 9352449960. Its totient is φ = 7997049216.

The previous prime is 8673943879. The next prime is 8673944009. The reversal of 8673943889 is 9883493768.

It can be written as a sum of positive squares in 4 ways, for example, as 787083025 + 7886860864 = 28055^2 + 88808^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8673943889 - 2²⁰ = 8672895313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8673943849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391652 + ... + 413205.

It is an arithmetic number, because the mean of its divisors is an integer number (1169056245).

Almost surely, 2^8673943889 is an apocalyptic number.

It is an amenable number.

8673943889 is a deficient number, since it is larger than the sum of its proper divisors (678506071).

8673943889 is a wasteful number, since it uses less digits than its factorization.

8673943889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805699.

The product of its digits is 62705664, while the sum is 65.

The square root of 8673943889 is about 93134.0103775200. The cubic root of 8673943889 is about 2054.6548113773.

The spelling of 8673943889 in words is "eight billion, six hundred seventy-three million, nine hundred forty-three thousand, eight hundred eighty-nine".