6872779869 has 8 divisors (see below), whose sum is σ = 9165666432. Its totient is φ = 4580873280.

The previous prime is 6872779853. The next prime is 6872779961. The reversal of 6872779869 is 9689772786.

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

It is not a de Polignac number, because 6872779869 - 2⁴ = 6872779853 is a prime.

It is a super-2 number, since 2×6872779869² = 94470206255463314322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6872779829) 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 7 ways as a sum of consecutive naturals, for example, 228469 + ... + 256794.

It is an arithmetic number, because the mean of its divisors is an integer number (1145708304).

Almost surely, 2^6872779869 is an apocalyptic number.

It is an amenable number.

6872779869 is a deficient number, since it is larger than the sum of its proper divisors (2292886563).

6872779869 is a wasteful number, since it uses less digits than its factorization.

6872779869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489987.

The product of its digits is 128024064, while the sum is 69.

The square root of 6872779869 is about 82902.2307842196. The cubic root of 6872779869 is about 1901.2715282802.

The spelling of 6872779869 in words is "six billion, eight hundred seventy-two million, seven hundred seventy-nine thousand, eight hundred sixty-nine".