3993773992 has 16 divisors (see below), whose sum is σ = 8064351540. Its totient is φ = 1843280256.

The previous prime is 3993773933. The next prime is 3993774019. The reversal of 3993773992 is 2993773993.

It can be written as a sum of positive squares in 2 ways, for example, as 3428570916 + 565203076 = 58554^2 + 23774^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3993773992.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19200733 + ... + 19200940.

Almost surely, 2^3993773992 is an apocalyptic number.

It is an amenable number.

3993773992 is an abundant number, since it is smaller than the sum of its proper divisors (4070577548).

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

3993773992 is a wasteful number, since it uses less digits than its factorization.

3993773992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38401692 (or 38401688 counting only the distinct ones).

The product of its digits is 17360406, while the sum is 61.

The square root of 3993773992 is about 63196.3131203079. The cubic root of 3993773992 is about 1586.5770266505.

Subtracting from 3993773992 its reverse (2993773993), we obtain a palindrome (999999999).

The spelling of 3993773992 in words is "three billion, nine hundred ninety-three million, seven hundred seventy-three thousand, nine hundred ninety-two".