85081039 has 4 divisors (see below), whose sum is σ = 90085824. Its totient is φ = 80076256.

The previous prime is 85081037. The next prime is 85081043. The reversal of 85081039 is 93018058.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 85081039 - 2¹ = 85081037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85080995 and 85081013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85081037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2502367 + ... + 2502400.

It is an arithmetic number, because the mean of its divisors is an integer number (22521456).

Almost surely, 2^85081039 is an apocalyptic number.

85081039 is a deficient number, since it is larger than the sum of its proper divisors (5004785).

85081039 is a wasteful number, since it uses less digits than its factorization.

85081039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5004784.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 85081039 is about 9223.9383670968. The cubic root of 85081039 is about 439.8226540797.

The spelling of 85081039 in words is "eighty-five million, eighty-one thousand, thirty-nine".