3899113300021 has 2 divisors, whose sum is σ = 3899113300022. Its totient is φ = 3899113300020.

The previous prime is 3899113299973. The next prime is 3899113300073. The reversal of 3899113300021 is 1200033119983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3628411615921 + 270701684100 = 1904839^2 + 520290^2 .

It is an emirp because it is prime and its reverse (1200033119983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3899113300021 - 2³⁹ = 3349357486133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3899113300321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1949556650010 + 1949556650011.

It is an arithmetic number, because the mean of its divisors is an integer number (1949556650011).

Almost surely, 2^{3899113300021} is an apocalyptic number.

It is an amenable number.

3899113300021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3899113300021 is an equidigital number, since it uses as much as digits as its factorization.

3899113300021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 3899113300021 in words is "three trillion, eight hundred ninety-nine billion, one hundred thirteen million, three hundred thousand, twenty-one".