6859798739 has 4 divisors (see below), whose sum is σ = 6875284056. Its totient is φ = 6844313424.

The previous prime is 6859798733. The next prime is 6859798787. The reversal of 6859798739 is 9378979586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6859798739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6859798733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7741994 + ... + 7742879.

It is an arithmetic number, because the mean of its divisors is an integer number (1718821014).

Almost surely, 2^6859798739 is an apocalyptic number.

6859798739 is a deficient number, since it is larger than the sum of its proper divisors (15485317).

6859798739 is a wasteful number, since it uses less digits than its factorization.

6859798739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15485316.

The product of its digits is 205752960, while the sum is 71.

The square root of 6859798739 is about 82823.9019788370. The cubic root of 6859798739 is about 1900.0737495842.

The spelling of 6859798739 in words is "six billion, eight hundred fifty-nine million, seven hundred ninety-eight thousand, seven hundred thirty-nine".