3993894408 has 64 divisors (see below), whose sum is σ = 11428162560. Its totient is φ = 1139409216.

The previous prime is 3993894403. The next prime is 3993894431. The reversal of 3993894408 is 8044983993.

It is not an unprimeable number, because it can be changed into a prime (3993894403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97341 + ... + 132147.

It is an arithmetic number, because the mean of its divisors is an integer number (178565040).

Almost surely, 2^3993894408 is an apocalyptic number.

It is an amenable number.

3993894408 is an abundant number, since it is smaller than the sum of its proper divisors (7434268152).

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

3993894408 is a wasteful number, since it uses less digits than its factorization.

3993894408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35506 (or 35502 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 57.

The square root of 3993894408 is about 63197.2658269327. The cubic root of 3993894408 is about 1586.5929720811.

The spelling of 3993894408 in words is "three billion, nine hundred ninety-three million, eight hundred ninety-four thousand, four hundred eight".