134004209 has 2 divisors, whose sum is σ = 134004210. Its totient is φ = 134004208.

The previous prime is 134004197. The next prime is 134004253. The reversal of 134004209 is 902400431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133911184 + 93025 = 11572^2 + 305^2 .

It is an emirp because it is prime and its reverse (902400431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134004209 is a prime.

It is not a weakly prime, because it can be changed into another prime (104004209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67002104 + 67002105.

It is an arithmetic number, because the mean of its divisors is an integer number (67002105).

Almost surely, 2^134004209 is an apocalyptic number.

It is an amenable number.

134004209 is a deficient number, since it is larger than the sum of its proper divisors (1).

134004209 is an equidigital number, since it uses as much as digits as its factorization.

134004209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 134004209 is about 11576.0187024728. The cubic root of 134004209 is about 511.7283524512.

The spelling of 134004209 in words is "one hundred thirty-four million, four thousand, two hundred nine".