3884340382129 has 3 divisors (see below), whose sum is σ = 3884342353003. Its totient is φ = 3884338411256.

The previous prime is 3884340382103. The next prime is 3884340382147. The reversal of 3884340382129 is 9212830434883.

The square root of 3884340382129 is 1970873.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 5993082225 + 3878347299904 = 77415^2 + 1969352^2 .

It is not a de Polignac number, because 3884340382129 - 2⁷ = 3884340382001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3884340382129.

It is not an unprimeable number, because it can be changed into a prime (3884340382729) 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 2 ways as a sum of consecutive naturals, for example, 985437 + ... + 2956309.

Almost surely, 2^{3884340382129} is an apocalyptic number.

3884340382129 is the 1970873-rd square number.

3884340382129 is the 985437-th centered octagonal number.

It is an amenable number.

3884340382129 is a deficient number, since it is larger than the sum of its proper divisors (1970874).

3884340382129 is an frugal number, since it uses more digits than its factorization.

3884340382129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3941746 (or 1970873 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 55.

The spelling of 3884340382129 in words is "three trillion, eight hundred eighty-four billion, three hundred forty million, three hundred eighty-two thousand, one hundred twenty-nine".