135899 has 2 divisors, whose sum is σ = 135900. Its totient is φ = 135898.

The previous prime is 135893. The next prime is 135911. The reversal of 135899 is 998531.

135899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135899 is a prime.

It is a Chen prime.

It is a plaindrome in base 10 and base 12.

It is not a weakly prime, because it can be changed into another prime (135893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67949 + 67950.

It is an arithmetic number, because the mean of its divisors is an integer number (67950).

2¹³⁵⁸⁹⁹ is an apocalyptic number.

135899 is a deficient number, since it is larger than the sum of its proper divisors (1).

135899 is an equidigital number, since it uses as much as digits as its factorization.

135899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 35.

The square root of 135899 is about 368.6448155067. The cubic root of 135899 is about 51.4128982957.

The spelling of 135899 in words is "one hundred thirty-five thousand, eight hundred ninety-nine".