6889931 has 2 divisors, whose sum is σ = 6889932. Its totient is φ = 6889930.

The previous prime is 6889921. The next prime is 6889937. The reversal of 6889931 is 1399886.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6889931 is a prime.

It is a super-2 number, since 2×6889931² = 94942298369522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6889937) 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 as a sum of consecutive naturals, namely, 3444965 + 3444966.

It is an arithmetic number, because the mean of its divisors is an integer number (3444966).

Almost surely, 2^6889931 is an apocalyptic number.

6889931 is a deficient number, since it is larger than the sum of its proper divisors (1).

6889931 is an equidigital number, since it uses as much as digits as its factorization.

6889931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 44.

The square root of 6889931 is about 2624.8678061952. The cubic root of 6889931 is about 190.2851765575.

The spelling of 6889931 in words is "six million, eight hundred eighty-nine thousand, nine hundred thirty-one".