85386841 has 2 divisors, whose sum is σ = 85386842. Its totient is φ = 85386840.

The previous prime is 85386797. The next prime is 85386857. The reversal of 85386841 is 14868358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85026841 + 360000 = 9221^2 + 600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85386841 is a prime.

It is the 9241-st Hogben number.

It is not a weakly prime, because it can be changed into another prime (85386871) by changing a digit.

It is a nontrivial repunit in base 9240.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42693420 + 42693421.

It is an arithmetic number, because the mean of its divisors is an integer number (42693421).

Almost surely, 2^85386841 is an apocalyptic number.

It is an amenable number.

85386841 is a deficient number, since it is larger than the sum of its proper divisors (1).

85386841 is an equidigital number, since it uses as much as digits as its factorization.

85386841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 43.

The square root of 85386841 is about 9240.5000405822. The cubic root of 85386841 is about 440.3489673042.

The spelling of 85386841 in words is "eighty-five million, three hundred eighty-six thousand, eight hundred forty-one".