99559 has 2 divisors, whose sum is σ = 99560. Its totient is φ = 99558.

The previous prime is 99551. The next prime is 99563. The reversal of 99559 is 95599.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99559 - 2³ = 99551 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49779 + 49780.

It is an arithmetic number, because the mean of its divisors is an integer number (49780).

2⁹⁹⁵⁵⁹ is an apocalyptic number.

99559 is a deficient number, since it is larger than the sum of its proper divisors (1).

99559 is an equidigital number, since it uses as much as digits as its factorization.

99559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18225, while the sum is 37.

The square root of 99559 is about 315.5297133393. The cubic root of 99559 is about 46.3475564337.

The spelling of 99559 in words is "ninety-nine thousand, five hundred fifty-nine".