6399308771 has 8 divisors (see below), whose sum is σ = 6447906480. Its totient is φ = 6350738688.

The previous prime is 6399308749. The next prime is 6399308777. The reversal of 6399308771 is 1778039936.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6399308771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6399308777) 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, 903275 + ... + 910331.

It is an arithmetic number, because the mean of its divisors is an integer number (805988310).

Almost surely, 2^6399308771 is an apocalyptic number.

6399308771 is a deficient number, since it is larger than the sum of its proper divisors (48597709).

6399308771 is a wasteful number, since it uses less digits than its factorization.

6399308771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13813.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The square root of 6399308771 is about 79995.6797020939. The cubic root of 6399308771 is about 1856.5686893551.

The spelling of 6399308771 in words is "six billion, three hundred ninety-nine million, three hundred eight thousand, seven hundred seventy-one".