3989139216277 has 4 divisors (see below), whose sum is σ = 4054534941196. Its totient is φ = 3923743491360.

The previous prime is 3989139216259. The next prime is 3989139216287. The reversal of 3989139216277 is 7726129319893.

It is a happy number.

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 1162685601841 + 2826453614436 = 1078279^2 + 1681206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3989139216277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989139216287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32697862368 + ... + 32697862489.

It is an arithmetic number, because the mean of its divisors is an integer number (1013633735299).

Almost surely, 2^{3989139216277} is an apocalyptic number.

It is an amenable number.

3989139216277 is a deficient number, since it is larger than the sum of its proper divisors (65395724919).

3989139216277 is an equidigital number, since it uses as much as digits as its factorization.

3989139216277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65395724918.

The product of its digits is 61725888, while the sum is 67.

The spelling of 3989139216277 in words is "three trillion, nine hundred eighty-nine billion, one hundred thirty-nine million, two hundred sixteen thousand, two hundred seventy-seven".