6399679103 has 4 divisors (see below), whose sum is σ = 6399872040. Its totient is φ = 6399486168.

The previous prime is 6399679093. The next prime is 6399679147. The reversal of 6399679103 is 3019769936.

It is a happy number.

6399679103 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6399679103 - 2¹⁴ = 6399662719 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 (6399675103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32633 + ... + 117746.

It is an arithmetic number, because the mean of its divisors is an integer number (1599968010).

Almost surely, 2^6399679103 is an apocalyptic number.

6399679103 is a deficient number, since it is larger than the sum of its proper divisors (192937).

6399679103 is a wasteful number, since it uses less digits than its factorization.

6399679103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192936.

The product of its (nonzero) digits is 1653372, while the sum is 53.

The square root of 6399679103 is about 79997.9943686090. The cubic root of 6399679103 is about 1856.6045022612.

The spelling of 6399679103 in words is "six billion, three hundred ninety-nine million, six hundred seventy-nine thousand, one hundred three".