99800089 has 2 divisors, whose sum is σ = 99800090. Its totient is φ = 99800088.

The previous prime is 99800069. The next prime is 99800101. The reversal of 99800089 is 98000899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73616400 + 26183689 = 8580^2 + 5117^2 .

It is a cyclic number.

It is not a de Polignac number, because 99800089 - 2¹³ = 99791897 is a prime.

It is not a weakly prime, because it can be changed into another prime (99800009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49900044 + 49900045.

It is an arithmetic number, because the mean of its divisors is an integer number (49900045).

Almost surely, 2^99800089 is an apocalyptic number.

It is an amenable number.

99800089 is a deficient number, since it is larger than the sum of its proper divisors (1).

99800089 is an equidigital number, since it uses as much as digits as its factorization.

99800089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 99800089 is about 9989.9994494494. Note that the first 3 decimals coincide. The cubic root of 99800089 is about 463.8493754677.

The spelling of 99800089 in words is "ninety-nine million, eight hundred thousand, eighty-nine".