3997567984 has 10 divisors (see below), whose sum is σ = 7745288000. Its totient is φ = 1998783984.

The previous prime is 3997567963. The next prime is 3997567999. The reversal of 3997567984 is 4897657993.

3997567984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124923984 + ... + 124924015.

It is an arithmetic number, because the mean of its divisors is an integer number (774528800).

Almost surely, 2^3997567984 is an apocalyptic number.

It is an amenable number.

3997567984 is a deficient number, since it is larger than the sum of its proper divisors (3747720016).

3997567984 is a wasteful number, since it uses less digits than its factorization.

3997567984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249848007 (or 249848001 counting only the distinct ones).

The product of its digits is 102876480, while the sum is 67.

The square root of 3997567984 is about 63226.3235053249. The cubic root of 3997567984 is about 1587.0792713484.

Subtracting 3997567984 from its reverse (4897657993), we obtain a palindrome (900090009).

The spelling of 3997567984 in words is "three billion, nine hundred ninety-seven million, five hundred sixty-seven thousand, nine hundred eighty-four".