99584321 has 2 divisors, whose sum is σ = 99584322. Its totient is φ = 99584320.

The previous prime is 99584293. The next prime is 99584327. The reversal of 99584321 is 12348599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82609921 + 16974400 = 9089^2 + 4120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99584321 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 (99584327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49792160 + 49792161.

It is an arithmetic number, because the mean of its divisors is an integer number (49792161).

Almost surely, 2^99584321 is an apocalyptic number.

It is an amenable number.

99584321 is a deficient number, since it is larger than the sum of its proper divisors (1).

99584321 is an equidigital number, since it uses as much as digits as its factorization.

99584321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 99584321 is about 9979.1944063637. The cubic root of 99584321 is about 463.5148531676.

The spelling of 99584321 in words is "ninety-nine million, five hundred eighty-four thousand, three hundred twenty-one".