85208423 has 4 divisors (see below), whose sum is σ = 85228248. Its totient is φ = 85188600.

The previous prime is 85208419. The next prime is 85208479. The reversal of 85208423 is 32480258.

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 85208423 - 2² = 85208419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85208423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85208323) 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, 461 + ... + 13062.

It is an arithmetic number, because the mean of its divisors is an integer number (21307062).

Almost surely, 2^85208423 is an apocalyptic number.

85208423 is a deficient number, since it is larger than the sum of its proper divisors (19825).

85208423 is a wasteful number, since it uses less digits than its factorization.

85208423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19824.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 85208423 is about 9230.8408609400. The cubic root of 85208423 is about 440.0420466017.

The spelling of 85208423 in words is "eighty-five million, two hundred eight thousand, four hundred twenty-three".