9807949 has 2 divisors, whose sum is σ = 9807950. Its totient is φ = 9807948.

The previous prime is 9807943. The next prime is 9807953. The reversal of 9807949 is 9497089.

9807949 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9030025 + 777924 = 3005^2 + 882^2 .

It is a cyclic number.

It is not a de Polignac number, because 9807949 - 2⁹ = 9807437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9807899 and 9807908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9807943) 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, 4903974 + 4903975.

It is an arithmetic number, because the mean of its divisors is an integer number (4903975).

Almost surely, 2^9807949 is an apocalyptic number.

It is an amenable number.

9807949 is a deficient number, since it is larger than the sum of its proper divisors (1).

9807949 is an equidigital number, since it uses as much as digits as its factorization.

9807949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 9807949 is about 3131.7645186061. The cubic root of 9807949 is about 214.0553398674.

The spelling of 9807949 in words is "nine million, eight hundred seven thousand, nine hundred forty-nine".