9847949 has 2 divisors, whose sum is σ = 9847950. Its totient is φ = 9847948.

The previous prime is 9847931. The next prime is 9847963. The reversal of 9847949 is 9497489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9721924 + 126025 = 3118^2 + 355^2 .

It is an emirp because it is prime and its reverse (9497489) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9847949 - 2¹⁶ = 9782413 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9847897 and 9847906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9847969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4923974 + 4923975.

It is an arithmetic number, because the mean of its divisors is an integer number (4923975).

Almost surely, 2^9847949 is an apocalyptic number.

It is an amenable number.

9847949 is a deficient number, since it is larger than the sum of its proper divisors (1).

9847949 is an equidigital number, since it uses as much as digits as its factorization.

9847949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 50.

The square root of 9847949 is about 3138.1441968144. The cubic root of 9847949 is about 214.3459408914.

The spelling of 9847949 in words is "nine million, eight hundred forty-seven thousand, nine hundred forty-nine".