3900009820171 has 4 divisors (see below), whose sum is σ = 4129422162552. Its totient is φ = 3670597477792.

The previous prime is 3900009820169. The next prime is 3900009820207. The reversal of 3900009820171 is 1710289000093.

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

It is a cyclic number.

It is not a de Polignac number, because 3900009820171 - 2¹ = 3900009820169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3900009820471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114706171165 + ... + 114706171198.

It is an arithmetic number, because the mean of its divisors is an integer number (1032355540638).

Almost surely, 2^{3900009820171} is an apocalyptic number.

3900009820171 is a deficient number, since it is larger than the sum of its proper divisors (229412342381).

3900009820171 is a wasteful number, since it uses less digits than its factorization.

3900009820171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229412342380.

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 3900009820171 in words is "three trillion, nine hundred billion, nine million, eight hundred twenty thousand, one hundred seventy-one".