9824989 has 2 divisors, whose sum is σ = 9824990. Its totient is φ = 9824988.

The previous prime is 9824987. The next prime is 9824999. The reversal of 9824989 is 9894289.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7672900 + 2152089 = 2770^2 + 1467^2 .

It is a cyclic number.

It is not a de Polignac number, because 9824989 - 2¹ = 9824987 is a prime.

Together with 9824987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9824987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4912494 + 4912495.

It is an arithmetic number, because the mean of its divisors is an integer number (4912495).

Almost surely, 2^9824989 is an apocalyptic number.

It is an amenable number.

9824989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9824989 is an equidigital number, since it uses as much as digits as its factorization.

9824989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 49.

The square root of 9824989 is about 3134.4838490571. The cubic root of 9824989 is about 214.1792323237.

The spelling of 9824989 in words is "nine million, eight hundred twenty-four thousand, nine hundred eighty-nine".