99984449 has 2 divisors, whose sum is σ = 99984450. Its totient is φ = 99984448.

The previous prime is 99984439. The next prime is 99984457. The reversal of 99984449 is 94448999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75134224 + 24850225 = 8668^2 + 4985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99984449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99984394 and 99984403.

It is not a weakly prime, because it can be changed into another prime (99984439) 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, 49992224 + 49992225.

It is an arithmetic number, because the mean of its divisors is an integer number (49992225).

Almost surely, 2^99984449 is an apocalyptic number.

It is an amenable number.

99984449 is a deficient number, since it is larger than the sum of its proper divisors (1).

99984449 is an equidigital number, since it uses as much as digits as its factorization.

99984449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3359232, while the sum is 56.

The square root of 99984449 is about 9999.2224197684. Note that the first 3 decimals coincide. The cubic root of 99984449 is about 464.1348216646.

The spelling of 99984449 in words is "ninety-nine million, nine hundred eighty-four thousand, four hundred forty-nine".