3989071689 has 4 divisors (see below), whose sum is σ = 5318762256. Its totient is φ = 2659381124.

The previous prime is 3989071663. The next prime is 3989071703. The reversal of 3989071689 is 9861709893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3989071689 - 2⁸ = 3989071433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3989071649) 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 3 ways as a sum of consecutive naturals, for example, 664845279 + ... + 664845284.

It is an arithmetic number, because the mean of its divisors is an integer number (1329690564).

Almost surely, 2^3989071689 is an apocalyptic number.

It is an amenable number.

3989071689 is a deficient number, since it is larger than the sum of its proper divisors (1329690567).

3989071689 is a wasteful number, since it uses less digits than its factorization.

3989071689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329690566.

The product of its (nonzero) digits is 5878656, while the sum is 60.

The square root of 3989071689 is about 63159.0982282046. The cubic root of 3989071689 is about 1585.9540990730.

The spelling of 3989071689 in words is "three billion, nine hundred eighty-nine million, seventy-one thousand, six hundred eighty-nine".