6399108579 has 16 divisors (see below), whose sum is σ = 8785564704. Its totient is φ = 4140441600.

The previous prime is 6399108563. The next prime is 6399108589. The reversal of 6399108579 is 9758019936.

It is not a de Polignac number, because 6399108579 - 2⁴ = 6399108563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6399108589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111042 + ... + 158519.

It is an arithmetic number, because the mean of its divisors is an integer number (549097794).

Almost surely, 2^6399108579 is an apocalyptic number.

6399108579 is a deficient number, since it is larger than the sum of its proper divisors (2386456125).

6399108579 is a wasteful number, since it uses less digits than its factorization.

6399108579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269798.

The product of its (nonzero) digits is 3674160, while the sum is 57.

The square root of 6399108579 is about 79994.4284247347. The cubic root of 6399108579 is about 1856.5493292394.

The spelling of 6399108579 in words is "six billion, three hundred ninety-nine million, one hundred eight thousand, five hundred seventy-nine".