3999594891744 has 36 divisors (see below), whose sum is σ = 11373847974216. Its totient is φ = 1333198297152.

The previous prime is 3999594891707. The next prime is 3999594891751. The reversal of 3999594891744 is 4471984959993.

3999594891744 is a `hidden beast` number, since 3 + 9 + 9 + 9 + 594 + 8 + 9 + 17 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6943740844 + ... + 6943741419.

It is an arithmetic number, because the mean of its divisors is an integer number (315940221506).

Almost surely, 2^{3999594891744} is an apocalyptic number.

It is an amenable number.

3999594891744 is an abundant number, since it is smaller than the sum of its proper divisors (7374253082472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3999594891744 is a wasteful number, since it uses less digits than its factorization.

3999594891744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13887482279 (or 13887482268 counting only the distinct ones).

The product of its digits is 3174474240, while the sum is 81.

The spelling of 3999594891744 in words is "three trillion, nine hundred ninety-nine billion, five hundred ninety-four million, eight hundred ninety-one thousand, seven hundred forty-four".