3993904616 has 32 divisors (see below), whose sum is σ = 8282585640. Its totient is φ = 1793518848.

The previous prime is 3993904591. The next prime is 3993904753. The reversal of 3993904616 is 6164093993.

3993904616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3161812900 + 832091716 = 56230^2 + 28846^2 .

It is a super-2 number, since 2×3993904616² = 31902548163412214912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515111 + ... + 522806.

Almost surely, 2^3993904616 is an apocalyptic number.

It is an amenable number.

3993904616 is an abundant number, since it is smaller than the sum of its proper divisors (4288681024).

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

3993904616 is a wasteful number, since it uses less digits than its factorization.

3993904616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037973 (or 1037969 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 50.

The square root of 3993904616 is about 63197.3465898688. The cubic root of 3993904616 is about 1586.5943238050.

The spelling of 3993904616 in words is "three billion, nine hundred ninety-three million, nine hundred four thousand, six hundred sixteen".