3969786879693 has 12 divisors (see below), whose sum is σ = 5889113269468. Its totient is φ = 2574996894720.

The previous prime is 3969786879683. The next prime is 3969786879731.

3969786879693 is a `hidden beast` number, since 396 + 9 + 7 + 8 + 68 + 79 + 6 + 93 = 666.

3969786879693 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 2725609487364 + 1244177392329 = 1650942^2 + 1115427^2 .

It is not a de Polignac number, because 3969786879693 - 2⁵ = 3969786879661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3969786879683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5960640628 + ... + 5960641293.

Almost surely, 2^{3969786879693} is an apocalyptic number.

It is an amenable number.

3969786879693 is a deficient number, since it is larger than the sum of its proper divisors (1919326389775).

3969786879693 is a wasteful number, since it uses less digits than its factorization.

3969786879693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11921281964 (or 11921281961 counting only the distinct ones).

The product of its digits is 39998375424, while the sum is 90.

The spelling of 3969786879693 in words is "three trillion, nine hundred sixty-nine billion, seven hundred eighty-six million, eight hundred seventy-nine thousand, six hundred ninety-three".