43134409 has 2 divisors, whose sum is σ = 43134410. Its totient is φ = 43134408.

The previous prime is 43134401. The next prime is 43134431. The reversal of 43134409 is 90443134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22231225 + 20903184 = 4715^2 + 4572^2 .

It is a cyclic number.

It is not a de Polignac number, because 43134409 - 2³ = 43134401 is a prime.

It is not a weakly prime, because it can be changed into another prime (43134401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21567204 + 21567205.

It is an arithmetic number, because the mean of its divisors is an integer number (21567205).

Almost surely, 2^43134409 is an apocalyptic number.

It is an amenable number.

43134409 is a deficient number, since it is larger than the sum of its proper divisors (1).

43134409 is an equidigital number, since it uses as much as digits as its factorization.

43134409 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 43134409 is about 6567.6791182274. The cubic root of 43134409 is about 350.7044559979.

The spelling of 43134409 in words is "forty-three million, one hundred thirty-four thousand, four hundred nine".