84985619 has 4 divisors (see below), whose sum is σ = 85070040. Its totient is φ = 84901200.

The previous prime is 84985597. The next prime is 84985643. The reversal of 84985619 is 91658948.

It is a happy number.

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 84985619 - 2²⁰ = 83937043 is a prime.

It is a super-2 number, since 2×84985619² = 14445110873626322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84985699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40682 + ... + 42719.

It is an arithmetic number, because the mean of its divisors is an integer number (21267510).

Almost surely, 2^84985619 is an apocalyptic number.

84985619 is a deficient number, since it is larger than the sum of its proper divisors (84421).

84985619 is a wasteful number, since it uses less digits than its factorization.

84985619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84420.

The product of its digits is 622080, while the sum is 50.

The square root of 84985619 is about 9218.7645050733. The cubic root of 84985619 is about 439.6581694222.

It can be divided in two parts, 849 and 85619, that added together give a palindrome (86468).

The spelling of 84985619 in words is "eighty-four million, nine hundred eighty-five thousand, six hundred nineteen".