6979433509 has 8 divisors (see below), whose sum is σ = 7235779320. Its totient is φ = 6724132800.

The previous prime is 6979433507. The next prime is 6979433537. The reversal of 6979433509 is 9053349796.

It can be written as a sum of positive squares in 4 ways, for example, as 10857025 + 6968576484 = 3295^2 + 83478^2 .

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 6979433509 - 2¹ = 6979433507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6979433509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6979433507) 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 7 ways as a sum of consecutive naturals, for example, 247662 + ... + 274399.

It is an arithmetic number, because the mean of its divisors is an integer number (904472415).

Almost surely, 2^6979433509 is an apocalyptic number.

It is an amenable number.

6979433509 is a deficient number, since it is larger than the sum of its proper divisors (256345811).

6979433509 is a wasteful number, since it uses less digits than its factorization.

6979433509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522551.

The product of its (nonzero) digits is 5511240, while the sum is 55.

The square root of 6979433509 is about 83543.0039500616. The cubic root of 6979433509 is about 1911.0559030059.

The spelling of 6979433509 in words is "six billion, nine hundred seventy-nine million, four hundred thirty-three thousand, five hundred nine".