134550209 has 2 divisors, whose sum is σ = 134550210. Its totient is φ = 134550208.

The previous prime is 134550197. The next prime is 134550263. The reversal of 134550209 is 902055431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103469584 + 31080625 = 10172^2 + 5575^2 .

It is an emirp because it is prime and its reverse (902055431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134550209 - 2⁸ = 134549953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134556209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67275104 + 67275105.

It is an arithmetic number, because the mean of its divisors is an integer number (67275105).

Almost surely, 2^134550209 is an apocalyptic number.

It is an amenable number.

134550209 is a deficient number, since it is larger than the sum of its proper divisors (1).

134550209 is an equidigital number, since it uses as much as digits as its factorization.

134550209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 134550209 is about 11599.5779664607. The cubic root of 134550209 is about 512.4224228403.

The spelling of 134550209 in words is "one hundred thirty-four million, five hundred fifty thousand, two hundred nine".