3978284912 has 60 divisors (see below), whose sum is σ = 9032055840. Its totient is φ = 1692488448.

The previous prime is 3978284911. The next prime is 3978284927. The reversal of 3978284912 is 2194828793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978284911) 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, 88889 + ... + 125927.

It is an arithmetic number, because the mean of its divisors is an integer number (150534264).

Almost surely, 2^3978284912 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 3978284912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4516027920).

3978284912 is an abundant number, since it is smaller than the sum of its proper divisors (5053770928).

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

3978284912 is a wasteful number, since it uses less digits than its factorization.

3978284912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37198 (or 37185 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 3978284912 is about 63073.6467314202. The cubic root of 3978284912 is about 1584.5232919732.

The spelling of 3978284912 in words is "three billion, nine hundred seventy-eight million, two hundred eighty-four thousand, nine hundred twelve".