99984091 has 2 divisors, whose sum is σ = 99984092. Its totient is φ = 99984090.

The previous prime is 99984043. The next prime is 99984097. The reversal of 99984091 is 19048999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99984091 - 2¹⁵ = 99951323 is a prime.

It is not a weakly prime, because it can be changed into another prime (99984097) 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, 49992045 + 49992046.

It is an arithmetic number, because the mean of its divisors is an integer number (49992046).

Almost surely, 2^99984091 is an apocalyptic number.

99984091 is a deficient number, since it is larger than the sum of its proper divisors (1).

99984091 is an equidigital number, since it uses as much as digits as its factorization.

99984091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 49.

The square root of 99984091 is about 9999.2045183604. The cubic root of 99984091 is about 464.1342677103.

The spelling of 99984091 in words is "ninety-nine million, nine hundred eighty-four thousand, ninety-one".