6827979 has 4 divisors (see below), whose sum is σ = 9103976. Its totient is φ = 4551984.

The previous prime is 6827969. The next prime is 6827981. The reversal of 6827979 is 9797286.

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

It is not a de Polignac number, because 6827979 - 2⁹ = 6827467 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6827939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137994 + ... + 1137999.

It is an arithmetic number, because the mean of its divisors is an integer number (2275994).

Almost surely, 2^6827979 is an apocalyptic number.

6827979 is a deficient number, since it is larger than the sum of its proper divisors (2275997).

6827979 is a wasteful number, since it uses less digits than its factorization.

6827979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275996.

The product of its digits is 381024, while the sum is 48.

The square root of 6827979 is about 2613.0401833879. The cubic root of 6827979 is about 189.7131312670.

The spelling of 6827979 in words is "six million, eight hundred twenty-seven thousand, nine hundred seventy-nine".