6847949 has 2 divisors, whose sum is σ = 6847950. Its totient is φ = 6847948.

The previous prime is 6847937. The next prime is 6847969. The reversal of 6847949 is 9497486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6604900 + 243049 = 2570^2 + 493^2 .

It is a cyclic number.

It is not a de Polignac number, because 6847949 - 2⁸ = 6847693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6847969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3423974 + 3423975.

It is an arithmetic number, because the mean of its divisors is an integer number (3423975).

Almost surely, 2^6847949 is an apocalyptic number.

It is an amenable number.

6847949 is a deficient number, since it is larger than the sum of its proper divisors (1).

6847949 is an equidigital number, since it uses as much as digits as its factorization.

6847949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 6847949 is about 2616.8586129174. The cubic root of 6847949 is about 189.8979045215.

The spelling of 6847949 in words is "six million, eight hundred forty-seven thousand, nine hundred forty-nine".