85867933 has 2 divisors, whose sum is σ = 85867934. Its totient is φ = 85867932.

The previous prime is 85867921. The next prime is 85867939. The reversal of 85867933 is 33976858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85045284 + 822649 = 9222^2 + 907^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85867933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85867939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42933966 + 42933967.

It is an arithmetic number, because the mean of its divisors is an integer number (42933967).

Almost surely, 2^85867933 is an apocalyptic number.

It is an amenable number.

85867933 is a deficient number, since it is larger than the sum of its proper divisors (1).

85867933 is an equidigital number, since it uses as much as digits as its factorization.

85867933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 85867933 is about 9266.4951842647. The cubic root of 85867933 is about 441.1744330465.

The spelling of 85867933 in words is "eighty-five million, eight hundred sixty-seven thousand, nine hundred thirty-three".