136999 has 2 divisors, whose sum is σ = 137000. Its totient is φ = 136998.
The previous prime is 136993. The next prime is 137029. The reversal of 136999 is 999631.
136999 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 an emirp because it is prime and its reverse (999631) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 136999 - 23 = 136991 is a prime.
It is a Chen prime.
136999 is a modest number, since divided by 999 gives 136 as remainder.
136999 is a lucky number.
It is a plaindrome in base 10.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (136991) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68499 + 68500.
It is an arithmetic number, because the mean of its divisors is an integer number (68500).
2136999 is an apocalyptic number.
136999 is a deficient number, since it is larger than the sum of its proper divisors (1).
136999 is an equidigital number, since it uses as much as digits as its factorization.
136999 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 13122, while the sum is 37.
The square root of 136999 is about 370.1337596059. The cubic root of 136999 is about 51.5512419253.
It can be divided in two parts, 1369 and 99, that multiplied together give a palindrome (135531).
The spelling of 136999 in words is "one hundred thirty-six thousand, nine hundred ninety-nine".
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