845117085 has 16 divisors (see below), whose sum is σ = 1359198144. Its totient is φ = 448392192.

The previous prime is 845117069. The next prime is 845117113. The reversal of 845117085 is 580711548.

It is not a de Polignac number, because 845117085 - 2⁴ = 845117069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143067 + ... + 148856.

It is an arithmetic number, because the mean of its divisors is an integer number (84949884).

Almost surely, 2^845117085 is an apocalyptic number.

It is an amenable number.

845117085 is a deficient number, since it is larger than the sum of its proper divisors (514081059).

845117085 is a wasteful number, since it uses less digits than its factorization.

845117085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292124.

The product of its (nonzero) digits is 44800, while the sum is 39.

The square root of 845117085 is about 29070.8975609629. The cubic root of 845117085 is about 945.4508584599.

The spelling of 845117085 in words is "eight hundred forty-five million, one hundred seventeen thousand, eighty-five".