6859779249 has 8 divisors (see below), whose sum is σ = 9369454752. Its totient is φ = 4461644960.

The previous prime is 6859779229. The next prime is 6859779253. The reversal of 6859779249 is 9429779586.

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

It is a cyclic number.

It is not a de Polignac number, because 6859779249 - 2⁸ = 6859778993 is a prime.

It is a super-2 number, since 2×6859779249² = 94113142690022008002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6859779249.

It is not an unprimeable number, because it can be changed into a prime (6859779229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27885159 + ... + 27885404.

It is an arithmetic number, because the mean of its divisors is an integer number (1171181844).

Almost surely, 2^6859779249 is an apocalyptic number.

It is an amenable number.

6859779249 is a deficient number, since it is larger than the sum of its proper divisors (2509675503).

6859779249 is a wasteful number, since it uses less digits than its factorization.

6859779249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55770607.

The product of its digits is 68584320, while the sum is 66.

The square root of 6859779249 is about 82823.7843194816. The cubic root of 6859779249 is about 1900.0719500916.

The spelling of 6859779249 in words is "six billion, eight hundred fifty-nine million, seven hundred seventy-nine thousand, two hundred forty-nine".