85439711 has 16 divisors (see below), whose sum is σ = 100642368. Its totient is φ = 71020800.

The previous prime is 85439707. The next prime is 85439719. The reversal of 85439711 is 11793458.

It is a cyclic number.

It is not a de Polignac number, because 85439711 - 2² = 85439707 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85439719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29801 + ... + 32541.

It is an arithmetic number, because the mean of its divisors is an integer number (6290148).

Almost surely, 2^85439711 is an apocalyptic number.

85439711 is a deficient number, since it is larger than the sum of its proper divisors (15202657).

85439711 is a wasteful number, since it uses less digits than its factorization.

85439711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882.

The product of its digits is 30240, while the sum is 38.

The square root of 85439711 is about 9243.3603738035. The cubic root of 85439711 is about 440.4398339459.

The spelling of 85439711 in words is "eighty-five million, four hundred thirty-nine thousand, seven hundred eleven".