3999999999994 has 32 divisors (see below), whose sum is σ = 6325840999296. Its totient is φ = 1893193758720.

The previous prime is 3999999999967. The next prime is 4000000000039. The reversal of 3999999999994 is 4999999999993.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116713249 + ... + 116747515.

It is an arithmetic number, because the mean of its divisors is an integer number (197682531228).

Almost surely, 2^{3999999999994} is an apocalyptic number.

3999999999994 is a deficient number, since it is larger than the sum of its proper divisors (2325840999302).

3999999999994 is a wasteful number, since it uses less digits than its factorization.

3999999999994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60550.

The product of its digits is 376572715308, while the sum is 106.

Subtracting 3999999999994 from its reverse (4999999999993), we obtain a palindrome (999999999999).

The spelling of 3999999999994 in words is "three trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-four".