3988821788441 has 8 divisors (see below), whose sum is σ = 4562362720320. Its totient is φ = 3416208168528.

The previous prime is 3988821788411. The next prime is 3988821788561. The reversal of 3988821788441 is 1448871288893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3988821788441 - 2⁶ = 3988821788377 is a prime.

It is a super-2 number, since 2×3988821788441² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3988821788411) 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 7 ways as a sum of consecutive naturals, for example, 231818771 + ... + 231835976.

It is an arithmetic number, because the mean of its divisors is an integer number (570295340040).

Almost surely, 2^{3988821788441} is an apocalyptic number.

It is an amenable number.

3988821788441 is a deficient number, since it is larger than the sum of its proper divisors (573540931879).

3988821788441 is a wasteful number, since it uses less digits than its factorization.

3988821788441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463655983.

The product of its digits is 198180864, while the sum is 71.

The spelling of 3988821788441 in words is "three trillion, nine hundred eighty-eight billion, eight hundred twenty-one million, seven hundred eighty-eight thousand, four hundred forty-one".