3997567982 has 8 divisors (see below), whose sum is σ = 6000217776. Its totient is φ = 1997495392.

The previous prime is 3997567963. The next prime is 3997567999. The reversal of 3997567982 is 2897657993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 640418 + ... + 646629.

It is an arithmetic number, because the mean of its divisors is an integer number (750027222).

Almost surely, 2^3997567982 is an apocalyptic number.

3997567982 is a deficient number, since it is larger than the sum of its proper divisors (2002649794).

3997567982 is a wasteful number, since it uses less digits than its factorization.

3997567982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288602.

The product of its digits is 51438240, while the sum is 65.

The square root of 3997567982 is about 63226.3234895087. The cubic root of 3997567982 is about 1587.0792710837.

The spelling of 3997567982 in words is "three billion, nine hundred ninety-seven million, five hundred sixty-seven thousand, nine hundred eighty-two".