6983979 has 4 divisors (see below), whose sum is σ = 9311976. Its totient is φ = 4655984.

The previous prime is 6983971. The next prime is 6983987. The reversal of 6983979 is 9793896.

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

It is an interprime number because it is at equal distance from previous prime (6983971) and next prime (6983987).

It is a cyclic number.

It is not a de Polignac number, because 6983979 - 2³ = 6983971 is a prime.

It is a D-number.

6983979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6983971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163994 + ... + 1163999.

It is an arithmetic number, because the mean of its divisors is an integer number (2327994).

Almost surely, 2^6983979 is an apocalyptic number.

6983979 is a deficient number, since it is larger than the sum of its proper divisors (2327997).

6983979 is a wasteful number, since it uses less digits than its factorization.

6983979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327996.

The product of its digits is 734832, while the sum is 51.

The square root of 6983979 is about 2642.7218922921. The cubic root of 6983979 is about 191.1470683675.

It can be divided in two parts, 69 and 83979, that added together give a palindrome (84048).

The spelling of 6983979 in words is "six million, nine hundred eighty-three thousand, nine hundred seventy-nine".