83985533 has 2 divisors, whose sum is σ = 83985534. Its totient is φ = 83985532.

The previous prime is 83985511. The next prime is 83985557. The reversal of 83985533 is 33558938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83960569 + 24964 = 9163^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 83985533 - 2⁸ = 83985277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83984533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41992766 + 41992767.

It is an arithmetic number, because the mean of its divisors is an integer number (41992767).

Almost surely, 2^83985533 is an apocalyptic number.

It is an amenable number.

83985533 is a deficient number, since it is larger than the sum of its proper divisors (1).

83985533 is an equidigital number, since it uses as much as digits as its factorization.

83985533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 44.

The square root of 83985533 is about 9164.3621163723. The cubic root of 83985533 is about 437.9267702820.

It can be divided in two parts, 8398 and 5533, that added together give a palindrome (13931).

The spelling of 83985533 in words is "eighty-three million, nine hundred eighty-five thousand, five hundred thirty-three".