134443909 has 2 divisors, whose sum is σ = 134443910. Its totient is φ = 134443908.

The previous prime is 134443873. The next prime is 134444003. The reversal of 134443909 is 909344431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133056225 + 1387684 = 11535^2 + 1178^2 .

It is a cyclic number.

It is not a de Polignac number, because 134443909 - 2¹¹ = 134441861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134443009) 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, 67221954 + 67221955.

It is an arithmetic number, because the mean of its divisors is an integer number (67221955).

Almost surely, 2^134443909 is an apocalyptic number.

It is an amenable number.

134443909 is a deficient number, since it is larger than the sum of its proper divisors (1).

134443909 is an equidigital number, since it uses as much as digits as its factorization.

134443909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 134443909 is about 11594.9949978428. The cubic root of 134443909 is about 512.2874426103.

The spelling of 134443909 in words is "one hundred thirty-four million, four hundred forty-three thousand, nine hundred nine".