99000899993 has 2 divisors, whose sum is σ = 99000899994. Its totient is φ = 99000899992.

The previous prime is 99000899981. The next prime is 99000900013. The reversal of 99000899993 is 39999800099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49966555024 + 49034344969 = 223532^2 + 221437^2 .

It is a cyclic number.

It is not a de Polignac number, because 99000899993 - 2³⁶ = 30281423257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (99000899923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49500449996 + 49500449997.

It is an arithmetic number, because the mean of its divisors is an integer number (49500449997).

Almost surely, 2^99000899993 is an apocalyptic number.

It is an amenable number.

99000899993 is a deficient number, since it is larger than the sum of its proper divisors (1).

99000899993 is an equidigital number, since it uses as much as digits as its factorization.

99000899993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12754584, while the sum is 65.

The spelling of 99000899993 in words is "ninety-nine billion, eight hundred ninety-nine thousand, nine hundred ninety-three".