3988272317849 has 4 divisors (see below), whose sum is σ = 4011325915236. Its totient is φ = 3965218720464.

The previous prime is 3988272317767. The next prime is 3988272317867. The reversal of 3988272317849 is 9487132728893.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1518132015625 + 2470140302224 = 1232125^2 + 1571668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3988272317849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3988272319849) 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 3 ways as a sum of consecutive naturals, for example, 11526798434 + ... + 11526798779.

It is an arithmetic number, because the mean of its divisors is an integer number (1002831478809).

Almost surely, 2^{3988272317849} is an apocalyptic number.

It is an amenable number.

3988272317849 is a deficient number, since it is larger than the sum of its proper divisors (23053597387).

3988272317849 is a wasteful number, since it uses less digits than its factorization.

3988272317849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23053597386.

The product of its digits is 292626432, while the sum is 71.

The spelling of 3988272317849 in words is "three trillion, nine hundred eighty-eight billion, two hundred seventy-two million, three hundred seventeen thousand, eight hundred forty-nine".