6439114021 has 16 divisors (see below), whose sum is σ = 6942608064. Its totient is φ = 5950381824.

The previous prime is 6439114013. The next prime is 6439114051. The reversal of 6439114021 is 1204119346.

It is a cyclic number.

It is not a de Polignac number, because 6439114021 - 2³ = 6439114013 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 (6439114051) 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 15 ways as a sum of consecutive naturals, for example, 215995 + ... + 243991.

It is an arithmetic number, because the mean of its divisors is an integer number (433913004).

Almost surely, 2^6439114021 is an apocalyptic number.

It is an amenable number.

6439114021 is a deficient number, since it is larger than the sum of its proper divisors (503494043).

6439114021 is a wasteful number, since it uses less digits than its factorization.

6439114021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28260.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 6439114021 is about 80244.0902559185. The cubic root of 6439114021 is about 1860.4101709399.

The spelling of 6439114021 in words is "six billion, four hundred thirty-nine million, one hundred fourteen thousand, twenty-one".