3939856648144 has 80 divisors (see below), whose sum is σ = 8012832145920. Its totient is φ = 1874730631680.

The previous prime is 3939856648141. The next prime is 3939856648183. The reversal of 3939856648144 is 4418466589393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939856648141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6159297 + ... + 6768799.

It is an arithmetic number, because the mean of its divisors is an integer number (100160401824).

Almost surely, 2^{3939856648144} is an apocalyptic number.

It is an amenable number.

3939856648144 is an abundant number, since it is smaller than the sum of its proper divisors (4072975497776).

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

3939856648144 is a wasteful number, since it uses less digits than its factorization.

3939856648144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609788 (or 609782 counting only the distinct ones).

The product of its digits is 537477120, while the sum is 70.

The spelling of 3939856648144 in words is "three trillion, nine hundred thirty-nine billion, eight hundred fifty-six million, six hundred forty-eight thousand, one hundred forty-four".