135669049 has 2 divisors, whose sum is σ = 135669050. Its totient is φ = 135669048.

The previous prime is 135669031. The next prime is 135669089. The reversal of 135669049 is 940966531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95257600 + 40411449 = 9760^2 + 6357^2 .

It is a cyclic number.

It is not a de Polignac number, because 135669049 - 2⁹ = 135668537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135668996 and 135669014.

It is not a weakly prime, because it can be changed into another prime (135669089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67834524 + 67834525.

It is an arithmetic number, because the mean of its divisors is an integer number (67834525).

Almost surely, 2^135669049 is an apocalyptic number.

It is an amenable number.

135669049 is a deficient number, since it is larger than the sum of its proper divisors (1).

135669049 is an equidigital number, since it uses as much as digits as its factorization.

135669049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 135669049 is about 11647.7057397584. The cubic root of 135669049 is about 513.8388380262.

The spelling of 135669049 in words is "one hundred thirty-five million, six hundred sixty-nine thousand, forty-nine".