85756939 has 2 divisors, whose sum is σ = 85756940. Its totient is φ = 85756938.

The previous prime is 85756927. The next prime is 85756961. The reversal of 85756939 is 93965758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85756939 - 2⁵ = 85756907 is a prime.

It is not a weakly prime, because it can be changed into another prime (85756739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42878469 + 42878470.

It is an arithmetic number, because the mean of its divisors is an integer number (42878470).

Almost surely, 2^85756939 is an apocalyptic number.

85756939 is a deficient number, since it is larger than the sum of its proper divisors (1).

85756939 is an equidigital number, since it uses as much as digits as its factorization.

85756939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 52.

The square root of 85756939 is about 9260.5042519293. The cubic root of 85756939 is about 440.9842618256.

The spelling of 85756939 in words is "eighty-five million, seven hundred fifty-six thousand, nine hundred thirty-nine".