85099173 has 8 divisors (see below), whose sum is σ = 113898048. Its totient is φ = 56516544.

The previous prime is 85099171. The next prime is 85099177. The reversal of 85099173 is 37199058.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85099173 - 2¹ = 85099171 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85099171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53140 + ... + 54717.

It is an arithmetic number, because the mean of its divisors is an integer number (14237256).

Almost surely, 2^85099173 is an apocalyptic number.

It is an amenable number.

85099173 is a deficient number, since it is larger than the sum of its proper divisors (28798875).

85099173 is a wasteful number, since it uses less digits than its factorization.

85099173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108123.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 85099173 is about 9224.9213004773. The cubic root of 85099173 is about 439.8538994959.

The spelling of 85099173 in words is "eighty-five million, ninety-nine thousand, one hundred seventy-three".