83843009 has 2 divisors, whose sum is σ = 83843010. Its totient is φ = 83843008.

The previous prime is 83842961. The next prime is 83843021. The reversal of 83843009 is 90034838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79263409 + 4579600 = 8903^2 + 2140^2 .

It is a cyclic number.

It is not a de Polignac number, because 83843009 - 2⁸ = 83842753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83843009.

It is not a weakly prime, because it can be changed into another prime (83843059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41921504 + 41921505.

It is an arithmetic number, because the mean of its divisors is an integer number (41921505).

Almost surely, 2^83843009 is an apocalyptic number.

It is an amenable number.

83843009 is a deficient number, since it is larger than the sum of its proper divisors (1).

83843009 is an equidigital number, since it uses as much as digits as its factorization.

83843009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 83843009 is about 9156.5828233026. The cubic root of 83843009 is about 437.6789084882.

The spelling of 83843009 in words is "eighty-three million, eight hundred forty-three thousand, nine".