43201009 has 2 divisors, whose sum is σ = 43201010. Its totient is φ = 43201008.

The previous prime is 43200991. The next prime is 43201019. The reversal of 43201009 is 90010234.

43201009 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., 40960000 + 2241009 = 6400^2 + 1497^2 .

It is a cyclic number.

It is not a de Polignac number, because 43201009 - 2⁷ = 43200881 is a prime.

It is not a weakly prime, because it can be changed into another prime (43201019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21600504 + 21600505.

It is an arithmetic number, because the mean of its divisors is an integer number (21600505).

Almost surely, 2^43201009 is an apocalyptic number.

It is an amenable number.

43201009 is a deficient number, since it is larger than the sum of its proper divisors (1).

43201009 is an equidigital number, since it uses as much as digits as its factorization.

43201009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 43201009 is about 6572.7474468444. The cubic root of 43201009 is about 350.8848603549.

It can be divided in two parts, 4320 and 1009, that added together give a square (5329 = 73²).

The spelling of 43201009 in words is "forty-three million, two hundred one thousand, nine".