85828117 has 2 divisors, whose sum is σ = 85828118. Its totient is φ = 85828116.

The previous prime is 85828109. The next prime is 85828151. The reversal of 85828117 is 71182858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82464561 + 3363556 = 9081^2 + 1834^2 .

It is a cyclic number.

It is not a de Polignac number, because 85828117 - 2³ = 85828109 is a prime.

It is equal to p_4989073 and since 85828117 and 4989073 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85828117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85828177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42914058 + 42914059.

It is an arithmetic number, because the mean of its divisors is an integer number (42914059).

Almost surely, 2^85828117 is an apocalyptic number.

It is an amenable number.

85828117 is a deficient number, since it is larger than the sum of its proper divisors (1).

85828117 is an equidigital number, since it uses as much as digits as its factorization.

85828117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35840, while the sum is 40.

The square root of 85828117 is about 9264.3465500811. The cubic root of 85828117 is about 441.1062332877.

The spelling of 85828117 in words is "eighty-five million, eight hundred twenty-eight thousand, one hundred seventeen".