85422179 has 4 divisors (see below), whose sum is σ = 85441560. Its totient is φ = 85402800.

The previous prime is 85422149. The next prime is 85422187. The reversal of 85422179 is 97122458.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85422179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85422109) 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, 479 + ... + 13079.

It is an arithmetic number, because the mean of its divisors is an integer number (21360390).

Almost surely, 2^85422179 is an apocalyptic number.

85422179 is a deficient number, since it is larger than the sum of its proper divisors (19381).

85422179 is a wasteful number, since it uses less digits than its factorization.

85422179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19380.

The product of its digits is 40320, while the sum is 38.

The square root of 85422179 is about 9242.4119687450. The cubic root of 85422179 is about 440.4097061934.

The spelling of 85422179 in words is "eighty-five million, four hundred twenty-two thousand, one hundred seventy-nine".