3967644040 has 32 divisors (see below), whose sum is σ = 8954199360. Its totient is φ = 1582257600.

The previous prime is 3967644007. The next prime is 3967644041. The reversal of 3967644040 is 404467693.

It is not an unprimeable number, because it can be changed into a prime (3967644041) 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, 136596 + ... + 163075.

It is an arithmetic number, because the mean of its divisors is an integer number (279818730).

Almost surely, 2^3967644040 is an apocalyptic number.

It is an amenable number.

3967644040 is an abundant number, since it is smaller than the sum of its proper divisors (4986555320).

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

3967644040 is a wasteful number, since it uses less digits than its factorization.

3967644040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300013 (or 300009 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 43.

The square root of 3967644040 is about 62989.2374934004. The cubic root of 3967644040 is about 1583.1093020298.

The spelling of 3967644040 in words is "three billion, nine hundred sixty-seven million, six hundred forty-four thousand, forty".