43084009 has 2 divisors, whose sum is σ = 43084010. Its totient is φ = 43084008.

The previous prime is 43083977. The next prime is 43084031. The reversal of 43084009 is 90048034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42614784 + 469225 = 6528^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 43084009 - 2⁵ = 43083977 is a prime.

It is not a weakly prime, because it can be changed into another prime (43084109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21542004 + 21542005.

It is an arithmetic number, because the mean of its divisors is an integer number (21542005).

Almost surely, 2^43084009 is an apocalyptic number.

It is an amenable number.

43084009 is a deficient number, since it is larger than the sum of its proper divisors (1).

43084009 is an equidigital number, since it uses as much as digits as its factorization.

43084009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 43084009 is about 6563.8410248878. The cubic root of 43084009 is about 350.5678103074.

The spelling of 43084009 in words is "forty-three million, eighty-four thousand, nine".