99823091 has 2 divisors, whose sum is σ = 99823092. Its totient is φ = 99823090.

The previous prime is 99823063. The next prime is 99823111. The reversal of 99823091 is 19032899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99823091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99823001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49911545 + 49911546.

It is an arithmetic number, because the mean of its divisors is an integer number (49911546).

Almost surely, 2^99823091 is an apocalyptic number.

99823091 is a deficient number, since it is larger than the sum of its proper divisors (1).

99823091 is an equidigital number, since it uses as much as digits as its factorization.

99823091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 99823091 is about 9991.1506344365. The cubic root of 99823091 is about 463.8850088485.

The spelling of 99823091 in words is "ninety-nine million, eight hundred twenty-three thousand, ninety-one".