9825841 has 2 divisors, whose sum is σ = 9825842. Its totient is φ = 9825840.

The previous prime is 9825839. The next prime is 9825857. The reversal of 9825841 is 1485289.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6780816 + 3045025 = 2604^2 + 1745^2 .

It is a cyclic number.

It is not a de Polignac number, because 9825841 - 2¹ = 9825839 is a prime.

Together with 9825839, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9825841.

It is not a weakly prime, because it can be changed into another prime (9825821) 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, 4912920 + 4912921.

It is an arithmetic number, because the mean of its divisors is an integer number (4912921).

Almost surely, 2^9825841 is an apocalyptic number.

It is an amenable number.

9825841 is a deficient number, since it is larger than the sum of its proper divisors (1).

9825841 is an equidigital number, since it uses as much as digits as its factorization.

9825841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 37.

The square root of 9825841 is about 3134.6197536543. The cubic root of 9825841 is about 214.1854231850.

The spelling of 9825841 in words is "nine million, eight hundred twenty-five thousand, eight hundred forty-one".