43204022009 has 2 divisors, whose sum is σ = 43204022010. Its totient is φ = 43204022008.

The previous prime is 43204021919. The next prime is 43204022021. The reversal of 43204022009 is 90022040234.

43204022009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43149675625 + 54346384 = 207725^2 + 7372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43204022009 is a prime.

It is not a weakly prime, because it can be changed into another prime (43204022039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21602011004 + 21602011005.

It is an arithmetic number, because the mean of its divisors is an integer number (21602011005).

Almost surely, 2^43204022009 is an apocalyptic number.

It is an amenable number.

43204022009 is a deficient number, since it is larger than the sum of its proper divisors (1).

43204022009 is an equidigital number, since it uses as much as digits as its factorization.

43204022009 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 26.

The spelling of 43204022009 in words is "forty-three billion, two hundred four million, twenty-two thousand, nine".