85417219 has 4 divisors (see below), whose sum is σ = 85442544. Its totient is φ = 85391896.

The previous prime is 85417207. The next prime is 85417237. The reversal of 85417219 is 91271458.

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 85417219 - 2²¹ = 83320067 is a prime.

It is a super-2 number, since 2×85417219² = 14592202603387922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85417819) 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, 6652 + ... + 14665.

It is an arithmetic number, because the mean of its divisors is an integer number (21360636).

Almost surely, 2^85417219 is an apocalyptic number.

85417219 is a deficient number, since it is larger than the sum of its proper divisors (25325).

85417219 is a wasteful number, since it uses less digits than its factorization.

85417219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25324.

The product of its digits is 20160, while the sum is 37.

The square root of 85417219 is about 9242.1436366246. The cubic root of 85417219 is about 440.4011819653.

The spelling of 85417219 in words is "eighty-five million, four hundred seventeen thousand, two hundred nineteen".