6397839799 has 8 divisors (see below), whose sum is σ = 7112239232. Its totient is φ = 5715191520.

The previous prime is 6397839787. The next prime is 6397839829. The reversal of 6397839799 is 9979387936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6397839799 - 2¹⁹ = 6397315511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6397839709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7937364 + ... + 7938169.

It is an arithmetic number, because the mean of its divisors is an integer number (889029904).

Almost surely, 2^6397839799 is an apocalyptic number.

6397839799 is a deficient number, since it is larger than the sum of its proper divisors (714399433).

6397839799 is a wasteful number, since it uses less digits than its factorization.

6397839799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15875577.

The product of its digits is 138883248, while the sum is 70.

The square root of 6397839799 is about 79986.4976042832. The cubic root of 6397839799 is about 1856.4266190041.

The spelling of 6397839799 in words is "six billion, three hundred ninety-seven million, eight hundred thirty-nine thousand, seven hundred ninety-nine".