3984233526721 has 32 divisors (see below), whose sum is σ = 4676743008000. Its totient is φ = 3323001937920.

The previous prime is 3984233526709. The next prime is 3984233526727. The reversal of 3984233526721 is 1276253324893.

It is not a de Polignac number, because 3984233526721 - 2⁹ = 3984233526209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3984233526727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 439804890 + ... + 439813948.

It is an arithmetic number, because the mean of its divisors is an integer number (146148219000).

Almost surely, 2^{3984233526721} is an apocalyptic number.

It is an amenable number.

3984233526721 is a deficient number, since it is larger than the sum of its proper divisors (692509481279).

3984233526721 is a wasteful number, since it uses less digits than its factorization.

3984233526721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12969.

The product of its digits is 13063680, while the sum is 55.

The spelling of 3984233526721 in words is "three trillion, nine hundred eighty-four billion, two hundred thirty-three million, five hundred twenty-six thousand, seven hundred twenty-one".