6928949 has 2 divisors, whose sum is σ = 6928950. Its totient is φ = 6928948.

The previous prime is 6928921. The next prime is 6928951. The reversal of 6928949 is 9498296.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6300100 + 628849 = 2510^2 + 793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6928949 is a prime.

Together with 6928951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6928969) 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 as a sum of consecutive naturals, namely, 3464474 + 3464475.

It is an arithmetic number, because the mean of its divisors is an integer number (3464475).

Almost surely, 2^6928949 is an apocalyptic number.

It is an amenable number.

6928949 is a deficient number, since it is larger than the sum of its proper divisors (1).

6928949 is an equidigital number, since it uses as much as digits as its factorization.

6928949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 47.

The square root of 6928949 is about 2632.2896877054. The cubic root of 6928949 is about 190.6436985689.

The spelling of 6928949 in words is "six million, nine hundred twenty-eight thousand, nine hundred forty-nine".