99749513 has 2 divisors, whose sum is σ = 99749514. Its totient is φ = 99749512.

The previous prime is 99749491. The next prime is 99749539. The reversal of 99749513 is 31594799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64192144 + 35557369 = 8012^2 + 5963^2 .

It is an emirp because it is prime and its reverse (31594799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99749513 - 2⁸ = 99749257 is a prime.

It is not a weakly prime, because it can be changed into another prime (99749593) 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, 49874756 + 49874757.

It is an arithmetic number, because the mean of its divisors is an integer number (49874757).

Almost surely, 2^99749513 is an apocalyptic number.

It is an amenable number.

99749513 is a deficient number, since it is larger than the sum of its proper divisors (1).

99749513 is an equidigital number, since it uses as much as digits as its factorization.

99749513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 47.

The square root of 99749513 is about 9987.4677971946. The cubic root of 99749513 is about 463.7710067666.

The spelling of 99749513 in words is "ninety-nine million, seven hundred forty-nine thousand, five hundred thirteen".