99844091 has 2 divisors, whose sum is σ = 99844092. Its totient is φ = 99844090.

The previous prime is 99844079. The next prime is 99844153. The reversal of 99844091 is 19044899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99844091 - 2¹⁰ = 99843067 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (99844051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49922045 + 49922046.

It is an arithmetic number, because the mean of its divisors is an integer number (49922046).

Almost surely, 2^99844091 is an apocalyptic number.

99844091 is a deficient number, since it is larger than the sum of its proper divisors (1).

99844091 is an equidigital number, since it uses as much as digits as its factorization.

99844091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 99844091 is about 9992.2015091770. The cubic root of 99844091 is about 463.9175360659.

The spelling of 99844091 in words is "ninety-nine million, eight hundred forty-four thousand, ninety-one".