99683796449 has 2 divisors, whose sum is σ = 99683796450. Its totient is φ = 99683796448.

The previous prime is 99683796437. The next prime is 99683796481. The reversal of 99683796449 is 94469738699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88703900224 + 10979896225 = 297832^2 + 104785^2 .

It is a cyclic number.

It is not a de Polignac number, because 99683796449 - 2²⁰ = 99682747873 is a prime.

It is not a weakly prime, because it can be changed into another prime (99683796649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49841898224 + 49841898225.

It is an arithmetic number, because the mean of its divisors is an integer number (49841898225).

Almost surely, 2^99683796449 is an apocalyptic number.

It is an amenable number.

99683796449 is a deficient number, since it is larger than the sum of its proper divisors (1).

99683796449 is an equidigital number, since it uses as much as digits as its factorization.

99683796449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 634894848, while the sum is 74.

The spelling of 99683796449 in words is "ninety-nine billion, six hundred eighty-three million, seven hundred ninety-six thousand, four hundred forty-nine".