6988379689 has 4 divisors (see below), whose sum is σ = 6992413956. Its totient is φ = 6984345424.

The previous prime is 6988379677. The next prime is 6988379711. The reversal of 6988379689 is 9869738896.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2049101289 + 4939278400 = 45267^2 + 70280^2 .

It is a cyclic number.

It is not a de Polignac number, because 6988379689 - 2¹⁵ = 6988346921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6988379789) 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, 2014534 + ... + 2017999.

It is an arithmetic number, because the mean of its divisors is an integer number (1748103489).

Almost surely, 2^6988379689 is an apocalyptic number.

It is an amenable number.

6988379689 is a deficient number, since it is larger than the sum of its proper divisors (4034267).

6988379689 is a wasteful number, since it uses less digits than its factorization.

6988379689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034266.

The product of its digits is 282175488, while the sum is 73.

The square root of 6988379689 is about 83596.5291683811. The cubic root of 6988379689 is about 1911.8720795858.

The spelling of 6988379689 in words is "six billion, nine hundred eighty-eight million, three hundred seventy-nine thousand, six hundred eighty-nine".