85758389 has 2 divisors, whose sum is σ = 85758390. Its totient is φ = 85758388.

The previous prime is 85758367. The next prime is 85758403. The reversal of 85758389 is 98385758.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81306289 + 4452100 = 9017^2 + 2110^2 .

It is a cyclic number.

It is not a de Polignac number, because 85758389 - 2¹² = 85754293 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85758389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85758359) 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, 42879194 + 42879195.

It is an arithmetic number, because the mean of its divisors is an integer number (42879195).

Almost surely, 2^85758389 is an apocalyptic number.

It is an amenable number.

85758389 is a deficient number, since it is larger than the sum of its proper divisors (1).

85758389 is an equidigital number, since it uses as much as digits as its factorization.

85758389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 53.

The square root of 85758389 is about 9260.5825410716. The cubic root of 85758389 is about 440.9867472360.

The spelling of 85758389 in words is "eighty-five million, seven hundred fifty-eight thousand, three hundred eighty-nine".