6879793821 has 4 divisors (see below), whose sum is σ = 9173058432. Its totient is φ = 4586529212.

The previous prime is 6879793819. The next prime is 6879793831. The reversal of 6879793821 is 1283979786.

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 6879793821 - 2¹ = 6879793819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6879793831) 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, 1146632301 + ... + 1146632306.

It is an arithmetic number, because the mean of its divisors is an integer number (2293264608).

Almost surely, 2^6879793821 is an apocalyptic number.

It is an amenable number.

6879793821 is a deficient number, since it is larger than the sum of its proper divisors (2293264611).

6879793821 is a wasteful number, since it uses less digits than its factorization.

6879793821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293264610.

The product of its digits is 9144576, while the sum is 60.

The square root of 6879793821 is about 82944.5225497139. The cubic root of 6879793821 is about 1901.9180834157.

The spelling of 6879793821 in words is "six billion, eight hundred seventy-nine million, seven hundred ninety-three thousand, eight hundred twenty-one".