83965559 has 2 divisors, whose sum is σ = 83965560. Its totient is φ = 83965558.

The previous prime is 83965529. The next prime is 83965573. The reversal of 83965559 is 95556938.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83965559 - 2²⁰ = 82916983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83965529) 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, 41982779 + 41982780.

It is an arithmetic number, because the mean of its divisors is an integer number (41982780).

Almost surely, 2^83965559 is an apocalyptic number.

83965559 is a deficient number, since it is larger than the sum of its proper divisors (1).

83965559 is an equidigital number, since it uses as much as digits as its factorization.

83965559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458000, while the sum is 50.

The square root of 83965559 is about 9163.2722866889. The cubic root of 83965559 is about 437.8920506403.

The spelling of 83965559 in words is "eighty-three million, nine hundred sixty-five thousand, five hundred fifty-nine".