6988839 has 24 divisors (see below), whose sum is σ = 11037936. Its totient is φ = 3907200.

The previous prime is 6988829. The next prime is 6988841. The reversal of 6988839 is 9388896.

It is not a de Polignac number, because 6988839 - 2¹² = 6984743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6988791 and 6988800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6988829) 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 23 ways as a sum of consecutive naturals, for example, 3979 + ... + 5459.

It is an arithmetic number, because the mean of its divisors is an integer number (459914).

Almost surely, 2^6988839 is an apocalyptic number.

6988839 is a deficient number, since it is larger than the sum of its proper divisors (4049097).

6988839 is a wasteful number, since it uses less digits than its factorization.

6988839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1508 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 6988839 is about 2643.6412388976. The cubic root of 6988839 is about 191.1913964576.

The spelling of 6988839 in words is "six million, nine hundred eighty-eight thousand, eight hundred thirty-nine".