85693191 has 4 divisors (see below), whose sum is σ = 114257592. Its totient is φ = 57128792.

The previous prime is 85693189. The next prime is 85693213. The reversal of 85693191 is 19139658.

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

It is a cyclic number.

It is not a de Polignac number, because 85693191 - 2¹ = 85693189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85693121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14282196 + ... + 14282201.

It is an arithmetic number, because the mean of its divisors is an integer number (28564398).

Almost surely, 2^85693191 is an apocalyptic number.

85693191 is a deficient number, since it is larger than the sum of its proper divisors (28564401).

85693191 is a wasteful number, since it uses less digits than its factorization.

85693191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28564400.

The product of its digits is 58320, while the sum is 42.

The square root of 85693191 is about 9257.0616828452. The cubic root of 85693191 is about 440.8749651955.

The spelling of 85693191 in words is "eighty-five million, six hundred ninety-three thousand, one hundred ninety-one".