3994524279868 has 12 divisors (see below), whose sum is σ = 7105014498232. Its totient is φ = 1964520137520.

The previous prime is 3994524279853. The next prime is 3994524279931. The reversal of 3994524279868 is 8689724254993.

It is a junction number, because it is equal to n+sod(n) for n = 3994524279794 and 3994524279803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8185500330 + ... + 8185500817.

Almost surely, 2^{3994524279868} is an apocalyptic number.

It is an amenable number.

3994524279868 is a deficient number, since it is larger than the sum of its proper divisors (3110490218364).

3994524279868 is a wasteful number, since it uses less digits than its factorization.

3994524279868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16371001212 (or 16371001210 counting only the distinct ones).

The product of its digits is 1881169920, while the sum is 76.

The spelling of 3994524279868 in words is "three trillion, nine hundred ninety-four billion, five hundred twenty-four million, two hundred seventy-nine thousand, eight hundred sixty-eight".