6858869917 has 4 divisors (see below), whose sum is σ = 6893336800. Its totient is φ = 6824403036.

The previous prime is 6858869887. The next prime is 6858869933. The reversal of 6858869917 is 7199688586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6858869917 - 2⁷ = 6858869789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6858869977) 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, 17233143 + ... + 17233540.

It is an arithmetic number, because the mean of its divisors is an integer number (1723334200).

Almost surely, 2^6858869917 is an apocalyptic number.

It is an amenable number.

6858869917 is a deficient number, since it is larger than the sum of its proper divisors (34466883).

6858869917 is a wasteful number, since it uses less digits than its factorization.

6858869917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34466882.

The product of its digits is 52254720, while the sum is 67.

The square root of 6858869917 is about 82818.2945791568. The cubic root of 6858869917 is about 1899.9879885667.

The spelling of 6858869917 in words is "six billion, eight hundred fifty-eight million, eight hundred sixty-nine thousand, nine hundred seventeen".