85841117 has 2 divisors, whose sum is σ = 85841118. Its totient is φ = 85841116.

The previous prime is 85841113. The next prime is 85841149. The reversal of 85841117 is 71114858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79049881 + 6791236 = 8891^2 + 2606^2 .

It is a cyclic number.

It is not a de Polignac number, because 85841117 - 2² = 85841113 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85841113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42920558 + 42920559.

It is an arithmetic number, because the mean of its divisors is an integer number (42920559).

Almost surely, 2^85841117 is an apocalyptic number.

It is an amenable number.

85841117 is a deficient number, since it is larger than the sum of its proper divisors (1).

85841117 is an equidigital number, since it uses as much as digits as its factorization.

85841117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 35.

The square root of 85841117 is about 9265.0481380293. The cubic root of 85841117 is about 441.1285029577.

It can be divided in two parts, 85841 and 117, that added together give a palindrome (85958).

The spelling of 85841117 in words is "eighty-five million, eight hundred forty-one thousand, one hundred seventeen".