83543959 has 2 divisors, whose sum is σ = 83543960. Its totient is φ = 83543958.

The previous prime is 83543909. The next prime is 83543963. The reversal of 83543959 is 95934538.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83543959 - 2¹⁷ = 83412887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83543909) 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, 41771979 + 41771980.

It is an arithmetic number, because the mean of its divisors is an integer number (41771980).

Almost surely, 2^83543959 is an apocalyptic number.

83543959 is a deficient number, since it is larger than the sum of its proper divisors (1).

83543959 is an equidigital number, since it uses as much as digits as its factorization.

83543959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The square root of 83543959 is about 9140.2384542199. The cubic root of 83543959 is about 437.1579196999.

The spelling of 83543959 in words is "eighty-three million, five hundred forty-three thousand, nine hundred fifty-nine".