3994728192 has 720 divisors, whose sum is σ = 15373659840. Its totient is φ = 1003290624.

The previous prime is 3994728191. The next prime is 3994728197. The reversal of 3994728192 is 2918274993.

3994728192 is a `hidden beast` number, since 3 + 9 + 9 + 472 + 81 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994728191) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 54722268 + ... + 54722340.

Almost surely, 2^3994728192 is an apocalyptic number.

3994728192 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3994728192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7686829920).

3994728192 is an abundant number, since it is smaller than the sum of its proper divisors (11378931648).

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

3994728192 is a wasteful number, since it uses less digits than its factorization.

3994728192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 127 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 3994728192 is about 63203.8621604724. The cubic root of 3994728192 is about 1586.7033725786.

The spelling of 3994728192 in words is "three billion, nine hundred ninety-four million, seven hundred twenty-eight thousand, one hundred ninety-two".