99849091 has 2 divisors, whose sum is σ = 99849092. Its totient is φ = 99849090.

The previous prime is 99849089. The next prime is 99849097. The reversal of 99849091 is 19094899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99849091 - 2¹ = 99849089 is a prime.

Together with 99849089, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99849097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49924545 + 49924546.

It is an arithmetic number, because the mean of its divisors is an integer number (49924546).

Almost surely, 2^99849091 is an apocalyptic number.

99849091 is a deficient number, since it is larger than the sum of its proper divisors (1).

99849091 is an equidigital number, since it uses as much as digits as its factorization.

99849091 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 99849091 is about 9992.4517011592. The cubic root of 99849091 is about 463.9252799692.

The spelling of 99849091 in words is "ninety-nine million, eight hundred forty-nine thousand, ninety-one".