3989114021 has 2 divisors, whose sum is σ = 3989114022. Its totient is φ = 3989114020.

The previous prime is 3989113993. The next prime is 3989114027. The reversal of 3989114021 is 1204119893.

3989114021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2583688900 + 1405425121 = 50830^2 + 37489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3989114021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3989114027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1994557010 + 1994557011.

It is an arithmetic number, because the mean of its divisors is an integer number (1994557011).

Almost surely, 2^3989114021 is an apocalyptic number.

It is an amenable number.

3989114021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3989114021 is an equidigital number, since it uses as much as digits as its factorization.

3989114021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 3989114021 is about 63159.4333492630. The cubic root of 3989114021 is about 1585.9597090976.

The spelling of 3989114021 in words is "three billion, nine hundred eighty-nine million, one hundred fourteen thousand, twenty-one".