3946394688 has 112 divisors (see below), whose sum is σ = 11102059584. Its totient is φ = 1232896000.

The previous prime is 3946394687. The next prime is 3946394723. The reversal of 3946394688 is 8864936493.

It is not an unprimeable number, because it can be changed into a prime (3946394687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 816856 + ... + 821672.

It is an arithmetic number, because the mean of its divisors is an integer number (99125532).

Almost surely, 2^3946394688 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 3946394688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5551029792).

3946394688 is an abundant number, since it is smaller than the sum of its proper divisors (7155664896).

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

3946394688 is a wasteful number, since it uses less digits than its factorization.

3946394688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100 (or 5090 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 60.

The square root of 3946394688 is about 62820.3365798051. The cubic root of 3946394688 is about 1580.2780432541.

The spelling of 3946394688 in words is "three billion, nine hundred forty-six million, three hundred ninety-four thousand, six hundred eighty-eight".