85842791 has 2 divisors, whose sum is σ = 85842792. Its totient is φ = 85842790.

The previous prime is 85842781. The next prime is 85842811. The reversal of 85842791 is 19724858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85842791 - 2¹⁸ = 85580647 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 (85842721) 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, 42921395 + 42921396.

It is an arithmetic number, because the mean of its divisors is an integer number (42921396).

Almost surely, 2^85842791 is an apocalyptic number.

85842791 is a deficient number, since it is larger than the sum of its proper divisors (1).

85842791 is an equidigital number, since it uses as much as digits as its factorization.

85842791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 44.

The square root of 85842791 is about 9265.1384771087. The cubic root of 85842791 is about 441.1313704426.

The spelling of 85842791 in words is "eighty-five million, eight hundred forty-two thousand, seven hundred ninety-one".