3984509585321 has 16 divisors (see below), whose sum is σ = 4020541636608. Its totient is φ = 3948553299600.

The previous prime is 3984509585299. The next prime is 3984509585423. The reversal of 3984509585321 is 1235859054893.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3984509585321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3984509585521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524066906 + ... + 524074508.

It is an arithmetic number, because the mean of its divisors is an integer number (251283852288).

Almost surely, 2^{3984509585321} is an apocalyptic number.

It is an amenable number.

3984509585321 is a deficient number, since it is larger than the sum of its proper divisors (36032051287).

3984509585321 is a wasteful number, since it uses less digits than its factorization.

3984509585321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11972.

The product of its (nonzero) digits is 46656000, while the sum is 62.

The spelling of 3984509585321 in words is "three trillion, nine hundred eighty-four billion, five hundred nine million, five hundred eighty-five thousand, three hundred twenty-one".