99012491 has 2 divisors, whose sum is σ = 99012492. Its totient is φ = 99012490.

The previous prime is 99012479. The next prime is 99012497. The reversal of 99012491 is 19421099.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99012491 - 2¹⁰ = 99011467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99012497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49506245 + 49506246.

It is an arithmetic number, because the mean of its divisors is an integer number (49506246).

Almost surely, 2^99012491 is an apocalyptic number.

99012491 is a deficient number, since it is larger than the sum of its proper divisors (1).

99012491 is an equidigital number, since it uses as much as digits as its factorization.

99012491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 99012491 is about 9950.5020476356. The cubic root of 99012491 is about 462.6259560523.

The spelling of 99012491 in words is "ninety-nine million, twelve thousand, four hundred ninety-one".