99964589 has 2 divisors, whose sum is σ = 99964590.
Its totient is φ = 99964588.
The previous prime is 99964577. The next prime is 99964597. The reversal of 99964589 is 98546999.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 53042089 + 46922500 = 7283^2 + 6850^2
It is an emirp because it is prime and its reverse (98546999) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 99964589 - 216 = 99899053 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (99964549) 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, 49982294 + 49982295.
It is an arithmetic number, because the mean of its divisors is an integer number (49982295).
Almost surely, 299964589 is an apocalyptic number.
It is an amenable number.
99964589 is a deficient number, since it is larger than the sum of its proper divisors (1).
99964589 is an equidigital number, since it uses as much as digits as its factorization.
99964589 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 6298560, while the sum is 59.
The square root of 99964589 is about 9998.2292932299.
The cubic root of 99964589 is about 464.1040891256.
The spelling of 99964589 in words is "ninety-nine million, nine hundred sixty-four thousand, five hundred eighty-nine".