3993912 has 96 divisors (see below), whose sum is σ = 12383280. Its totient is φ = 1152000.

The previous prime is 3993911. The next prime is 3993943. The reversal of 3993912 is 2193993.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 (3993911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15787 + ... + 16037.

Almost surely, 2^3993912 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 3993912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6191640).

3993912 is an abundant number, since it is smaller than the sum of its proper divisors (8389368).

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

3993912 is a wasteful number, since it uses less digits than its factorization.

3993912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 286 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The square root of 3993912 is about 1998.4774204379. The cubic root of 3993912 is about 158.6595301579.

The spelling of 3993912 in words is "three million, nine hundred ninety-three thousand, nine hundred twelve".