3912386868 has 288 divisors, whose sum is σ = 12064066560. Its totient is φ = 1056706560.

The previous prime is 3912386861. The next prime is 3912386873. The reversal of 3912386868 is 8686832193.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3912386861) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7152171 + ... + 7152717.

It is an arithmetic number, because the mean of its divisors is an integer number (41889120).

Almost surely, 2^3912386868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3912386868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6032033280).

3912386868 is an abundant number, since it is smaller than the sum of its proper divisors (8151679692).

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

3912386868 is a wasteful number, since it uses less digits than its factorization.

3912386868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 642 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 3912386868 is about 62549.0756766237. The cubic root of 3912386868 is about 1575.7256242226.

The spelling of 3912386868 in words is "three billion, nine hundred twelve million, three hundred eighty-six thousand, eight hundred sixty-eight".