3989659383874 has 4 divisors (see below), whose sum is σ = 5984489075814. Its totient is φ = 1994829691936.

The previous prime is 3989659383863. The next prime is 3989659383911. The reversal of 3989659383874 is 4783839569893.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3953762397649 + 35896986225 = 1988407^2 + 189465^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997414845967 + ... + 997414845970.

Almost surely, 2^{3989659383874} is an apocalyptic number.

3989659383874 is a deficient number, since it is larger than the sum of its proper divisors (1994829691940).

3989659383874 is a wasteful number, since it uses less digits than its factorization.

3989659383874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994829691939.

The product of its digits is 8465264640, while the sum is 82.

The spelling of 3989659383874 in words is "three trillion, nine hundred eighty-nine billion, six hundred fifty-nine million, three hundred eighty-three thousand, eight hundred seventy-four".