6986868399 has 36 divisors (see below), whose sum is σ = 11762675496. Its totient is φ = 3984730848.

The previous prime is 6986868391. The next prime is 6986868407. The reversal of 6986868399 is 9938686896.

It is an interprime number because it is at equal distance from previous prime (6986868391) and next prime (6986868407).

It is not a de Polignac number, because 6986868399 - 2³ = 6986868391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6986868391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 215497 + ... + 245789.

It is an arithmetic number, because the mean of its divisors is an integer number (326740986).

Almost surely, 2^6986868399 is an apocalyptic number.

6986868399 is a deficient number, since it is larger than the sum of its proper divisors (4775807097).

6986868399 is a wasteful number, since it uses less digits than its factorization.

6986868399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30836 (or 30826 counting only the distinct ones).

The product of its digits is 241864704, while the sum is 72.

The square root of 6986868399 is about 83587.4894885592. The cubic root of 6986868399 is about 1911.7342507140.

The spelling of 6986868399 in words is "six billion, nine hundred eighty-six million, eight hundred sixty-eight thousand, three hundred ninety-nine".