3983378985 has 32 divisors (see below), whose sum is σ = 7254293760. Its totient is φ = 2072649600.

The previous prime is 3983378957. The next prime is 3983378999. The reversal of 3983378985 is 5898733893.

It is not a de Polignac number, because 3983378985 - 2¹⁰ = 3983377961 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 354301 + ... + 365370.

It is an arithmetic number, because the mean of its divisors is an integer number (226696680).

Almost surely, 2^3983378985 is an apocalyptic number.

It is an amenable number.

3983378985 is a deficient number, since it is larger than the sum of its proper divisors (3270914775).

3983378985 is a wasteful number, since it uses less digits than its factorization.

3983378985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719726 (or 719720 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The square root of 3983378985 is about 63114.0157571993. The cubic root of 3983378985 is about 1585.1993148296.

The spelling of 3983378985 in words is "three billion, nine hundred eighty-three million, three hundred seventy-eight thousand, nine hundred eighty-five".