43412209 has 2 divisors, whose sum is σ = 43412210. Its totient is φ = 43412208.

The previous prime is 43412197. The next prime is 43412219. The reversal of 43412209 is 90221434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33350625 + 10061584 = 5775^2 + 3172^2 .

It is a cyclic number.

It is not a de Polignac number, because 43412209 - 2⁷ = 43412081 is a prime.

It is not a weakly prime, because it can be changed into another prime (43412219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21706104 + 21706105.

It is an arithmetic number, because the mean of its divisors is an integer number (21706105).

Almost surely, 2^43412209 is an apocalyptic number.

It is an amenable number.

43412209 is a deficient number, since it is larger than the sum of its proper divisors (1).

43412209 is an equidigital number, since it uses as much as digits as its factorization.

43412209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 43412209 is about 6588.7941992447. The cubic root of 43412209 is about 351.4557300884.

The spelling of 43412209 in words is "forty-three million, four hundred twelve thousand, two hundred nine".