6889939 has 6 divisors (see below), whose sum is σ = 8014884. Its totient is φ = 5905620.

The previous prime is 6889937. The next prime is 6889963. The reversal of 6889939 is 9399886.

It is not a de Polignac number, because 6889939 - 2¹ = 6889937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6889931) 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 5 ways as a sum of consecutive naturals, for example, 70257 + ... + 70354.

It is an arithmetic number, because the mean of its divisors is an integer number (1335814).

Almost surely, 2^6889939 is an apocalyptic number.

6889939 is a deficient number, since it is larger than the sum of its proper divisors (1124945).

6889939 is a wasteful number, since it uses less digits than its factorization.

6889939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140625 (or 140618 counting only the distinct ones).

The product of its digits is 839808, while the sum is 52.

The square root of 6889939 is about 2624.8693300810. The cubic root of 6889939 is about 190.2852502051.

The spelling of 6889939 in words is "six million, eight hundred eighty-nine thousand, nine hundred thirty-nine".