136949 has 2 divisors, whose sum is σ = 136950. Its totient is φ = 136948.

The previous prime is 136943. The next prime is 136951. The reversal of 136949 is 949631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136900 + 49 = 370^2 + 7^2 .

It is an emirp because it is prime and its reverse (949631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136949 - 2⁸ = 136693 is a prime.

It is a Sophie Germain prime.

Together with 136951, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 136949.

It is not a weakly prime, because it can be changed into another prime (136943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68474 + 68475.

It is an arithmetic number, because the mean of its divisors is an integer number (68475).

2¹³⁶⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

136949 is a deficient number, since it is larger than the sum of its proper divisors (1).

136949 is an equidigital number, since it uses as much as digits as its factorization.

136949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 136949 is about 370.0662102922. The cubic root of 136949 is about 51.5449696758.

It can be divided in two parts, 1369 and 49, that multiplied together give a square (67081 = 259²).

The spelling of 136949 in words is "one hundred thirty-six thousand, nine hundred forty-nine".