99280589 has 2 divisors, whose sum is σ = 99280590. Its totient is φ = 99280588.

The previous prime is 99280553. The next prime is 99280603. The reversal of 99280589 is 98508299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72675625 + 26604964 = 8525^2 + 5158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99280589 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99280189) 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, 49640294 + 49640295.

It is an arithmetic number, because the mean of its divisors is an integer number (49640295).

Almost surely, 2^99280589 is an apocalyptic number.

It is an amenable number.

99280589 is a deficient number, since it is larger than the sum of its proper divisors (1).

99280589 is an equidigital number, since it uses as much as digits as its factorization.

99280589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 99280589 is about 9963.9645222170. The cubic root of 99280589 is about 463.0431334377.

The spelling of 99280589 in words is "ninety-nine million, two hundred eighty thousand, five hundred eighty-nine".