43409159 has 2 divisors, whose sum is σ = 43409160. Its totient is φ = 43409158.

The previous prime is 43409137. The next prime is 43409183. The reversal of 43409159 is 95190434.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43409159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43409189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21704579 + 21704580.

It is an arithmetic number, because the mean of its divisors is an integer number (21704580).

Almost surely, 2^43409159 is an apocalyptic number.

43409159 is a deficient number, since it is larger than the sum of its proper divisors (1).

43409159 is an equidigital number, since it uses as much as digits as its factorization.

43409159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 43409159 is about 6588.5627416000. The cubic root of 43409159 is about 351.4474991851.

The spelling of 43409159 in words is "forty-three million, four hundred nine thousand, one hundred fifty-nine".