3993403445808 has 80 divisors (see below), whose sum is σ = 11794030300416. Its totient is φ = 1140587055360.

The previous prime is 3993403445807. The next prime is 3993403445819. The reversal of 3993403445808 is 8085443043993.

It is not an unprimeable number, because it can be changed into a prime (3993403445807) 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, 1010023 + ... + 3001158.

Almost surely, 2^{3993403445808} is an apocalyptic number.

It is an amenable number.

3993403445808 is an abundant number, since it is smaller than the sum of its proper divisors (7800626854608).

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

3993403445808 is a wasteful number, since it uses less digits than its factorization.

3993403445808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014162 (or 4014156 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 60.

The spelling of 3993403445808 in words is "three trillion, nine hundred ninety-three billion, four hundred three million, four hundred forty-five thousand, eight hundred eight".