134749309 has 2 divisors, whose sum is σ = 134749310. Its totient is φ = 134749308.

The previous prime is 134749253. The next prime is 134749337. The reversal of 134749309 is 903947431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133333209 + 1416100 = 11547^2 + 1190^2 .

It is a cyclic number.

It is not a de Polignac number, because 134749309 - 2⁹ = 134748797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134749369) 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, 67374654 + 67374655.

It is an arithmetic number, because the mean of its divisors is an integer number (67374655).

Almost surely, 2^134749309 is an apocalyptic number.

It is an amenable number.

134749309 is a deficient number, since it is larger than the sum of its proper divisors (1).

134749309 is an equidigital number, since it uses as much as digits as its factorization.

134749309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 134749309 is about 11608.1570027287. The cubic root of 134749309 is about 512.6750497807.

The spelling of 134749309 in words is "one hundred thirty-four million, seven hundred forty-nine thousand, three hundred nine".