6879317149 has 4 divisors (see below), whose sum is σ = 6888703036. Its totient is φ = 6869931264.

The previous prime is 6879317141. The next prime is 6879317173. The reversal of 6879317149 is 9417139786.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4451291524 + 2428025625 = 66718^2 + 49275^2 .

It is a cyclic number.

It is not a de Polignac number, because 6879317149 - 2³ = 6879317141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6879317149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6879317141) 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, 4691844 + ... + 4693309.

It is an arithmetic number, because the mean of its divisors is an integer number (1722175759).

Almost surely, 2^6879317149 is an apocalyptic number.

It is an amenable number.

6879317149 is a deficient number, since it is larger than the sum of its proper divisors (9385887).

6879317149 is an equidigital number, since it uses as much as digits as its factorization.

6879317149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9385886.

The product of its digits is 2286144, while the sum is 55.

The square root of 6879317149 is about 82941.6490612527. The cubic root of 6879317149 is about 1901.8741570977.

The spelling of 6879317149 in words is "six billion, eight hundred seventy-nine million, three hundred seventeen thousand, one hundred forty-nine".