3957999960 has 32 divisors (see below), whose sum is σ = 11874000240. Its totient is φ = 1055466624.

The previous prime is 3957999911. The next prime is 3957999967. The reversal of 3957999960 is 699997593.

It is a junction number, because it is equal to n+sod(n) for n = 3957999891 and 3957999900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3957999967) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16491547 + ... + 16491786.

Almost surely, 2^3957999960 is an apocalyptic number.

3957999960 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3957999960 is an abundant number, since it is smaller than the sum of its proper divisors (7916000280).

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

3957999960 is a wasteful number, since it uses less digits than its factorization.

3957999960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32983347 (or 32983343 counting only the distinct ones).

The product of its (nonzero) digits is 37200870, while the sum is 66.

The square root of 3957999960 is about 62912.6375222022. The cubic root of 3957999960 is about 1581.8255830615.

The spelling of 3957999960 in words is "three billion, nine hundred fifty-seven million, nine hundred ninety-nine thousand, nine hundred sixty".