134209549 has 2 divisors, whose sum is σ = 134209550. Its totient is φ = 134209548.

The previous prime is 134209519. The next prime is 134209561. The reversal of 134209549 is 945902431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131905225 + 2304324 = 11485^2 + 1518^2 .

It is a cyclic number.

It is not a de Polignac number, because 134209549 - 2¹⁵ = 134176781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134209519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67104774 + 67104775.

It is an arithmetic number, because the mean of its divisors is an integer number (67104775).

Almost surely, 2^134209549 is an apocalyptic number.

It is an amenable number.

134209549 is a deficient number, since it is larger than the sum of its proper divisors (1).

134209549 is an equidigital number, since it uses as much as digits as its factorization.

134209549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 134209549 is about 11584.8845052508. The cubic root of 134209549 is about 511.9895996524.

The spelling of 134209549 in words is "one hundred thirty-four million, two hundred nine thousand, five hundred forty-nine".