99584621 has 2 divisors, whose sum is σ = 99584622. Its totient is φ = 99584620.

The previous prime is 99584609. The next prime is 99584663. The reversal of 99584621 is 12648599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92428996 + 7155625 = 9614^2 + 2675^2 .

It is a cyclic number.

It is not a de Polignac number, because 99584621 - 2⁶ = 99584557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99584321) 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, 49792310 + 49792311.

It is an arithmetic number, because the mean of its divisors is an integer number (49792311).

Almost surely, 2^99584621 is an apocalyptic number.

It is an amenable number.

99584621 is a deficient number, since it is larger than the sum of its proper divisors (1).

99584621 is an equidigital number, since it uses as much as digits as its factorization.

99584621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 44.

The square root of 99584621 is about 9979.2094376258. The cubic root of 99584621 is about 463.5153186167.

The spelling of 99584621 in words is "ninety-nine million, five hundred eighty-four thousand, six hundred twenty-one".