134430409 has 2 divisors, whose sum is σ = 134430410. Its totient is φ = 134430408.

The previous prime is 134430403. The next prime is 134430433. The reversal of 134430409 is 904034431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81504784 + 52925625 = 9028^2 + 7275^2 .

It is a cyclic number.

It is not a de Polignac number, because 134430409 - 2⁷ = 134430281 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134430403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67215204 + 67215205.

It is an arithmetic number, because the mean of its divisors is an integer number (67215205).

Almost surely, 2^134430409 is an apocalyptic number.

It is an amenable number.

134430409 is a deficient number, since it is larger than the sum of its proper divisors (1).

134430409 is an equidigital number, since it uses as much as digits as its factorization.

134430409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 134430409 is about 11594.4128354997. The cubic root of 134430409 is about 512.2702951570.

The spelling of 134430409 in words is "one hundred thirty-four million, four hundred thirty thousand, four hundred nine".