136399 has 2 divisors, whose sum is σ = 136400. Its totient is φ = 136398.

The previous prime is 136397. The next prime is 136403. The reversal of 136399 is 993631.

136399 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 not a de Polignac number, because 136399 - 2¹ = 136397 is a prime.

Together with 136397, it forms a pair of twin primes.

136399 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 136399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68199 + 68200.

It is an arithmetic number, because the mean of its divisors is an integer number (68200).

2¹³⁶³⁹⁹ is an apocalyptic number.

136399 is a deficient number, since it is larger than the sum of its proper divisors (1).

136399 is an equidigital number, since it uses as much as digits as its factorization.

136399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4374, while the sum is 31.

The square root of 136399 is about 369.3223524240. The cubic root of 136399 is about 51.4758739542.

It can be divided in two parts, 136 and 399, that added together give a palindrome (535).

The spelling of 136399 in words is "one hundred thirty-six thousand, three hundred ninety-nine".