99430091 has 2 divisors, whose sum is σ = 99430092. Its totient is φ = 99430090.

The previous prime is 99430087. The next prime is 99430103. The reversal of 99430091 is 19003499.

It is a weak prime.

It is an emirp because it is prime and its reverse (19003499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99430091 - 2² = 99430087 is a prime.

It is not a weakly prime, because it can be changed into another prime (99430031) 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, 49715045 + 49715046.

It is an arithmetic number, because the mean of its divisors is an integer number (49715046).

Almost surely, 2^99430091 is an apocalyptic number.

99430091 is a deficient number, since it is larger than the sum of its proper divisors (1).

99430091 is an equidigital number, since it uses as much as digits as its factorization.

99430091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 99430091 is about 9971.4638343625. The cubic root of 99430091 is about 463.2754418754.

The spelling of 99430091 in words is "ninety-nine million, four hundred thirty thousand, ninety-one".