85928861 has 2 divisors, whose sum is σ = 85928862. Its totient is φ = 85928860.

The previous prime is 85928803. The next prime is 85928867. The reversal of 85928861 is 16882958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84732025 + 1196836 = 9205^2 + 1094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85928861 is a prime.

It is a Chen prime.

It is equal to p_4994597 and since 85928861 and 4994597 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85928867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42964430 + 42964431.

It is an arithmetic number, because the mean of its divisors is an integer number (42964431).

Almost surely, 2^85928861 is an apocalyptic number.

It is an amenable number.

85928861 is a deficient number, since it is larger than the sum of its proper divisors (1).

85928861 is an equidigital number, since it uses as much as digits as its factorization.

85928861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 47.

The square root of 85928861 is about 9269.7821441499. The cubic root of 85928861 is about 441.2787541818.

The spelling of 85928861 in words is "eighty-five million, nine hundred twenty-eight thousand, eight hundred sixty-one".