6979743949 has 4 divisors (see below), whose sum is σ = 6984451936. Its totient is φ = 6975035964.

The previous prime is 6979743929. The next prime is 6979743959. The reversal of 6979743949 is 9493479796.

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 6979743949 - 2⁹ = 6979743437 is a prime.

It is a super-2 number, since 2×6979743949² = 97433651187204229202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6979743929) 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, 2351769 + ... + 2354734.

It is an arithmetic number, because the mean of its divisors is an integer number (1746112984).

Almost surely, 2^6979743949 is an apocalyptic number.

It is an amenable number.

6979743949 is a deficient number, since it is larger than the sum of its proper divisors (4707987).

6979743949 is a wasteful number, since it uses less digits than its factorization.

6979743949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4707986.

The product of its digits is 92588832, while the sum is 67.

The square root of 6979743949 is about 83544.8618946731. The cubic root of 6979743949 is about 1911.0842366998.

The spelling of 6979743949 in words is "six billion, nine hundred seventy-nine million, seven hundred forty-three thousand, nine hundred forty-nine".