84115 has 4 divisors (see below), whose sum is σ = 100944. Its totient is φ = 67288.

The previous prime is 84089. The next prime is 84121. The reversal of 84115 is 51148.

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 84115 - 2⁷ = 83987 is a prime.

It is a Duffinian number.

84115 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 84092 and 84101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8407 + ... + 8416.

It is an arithmetic number, because the mean of its divisors is an integer number (25236).

2⁸⁴¹¹⁵ is an apocalyptic number.

84115 is a deficient number, since it is larger than the sum of its proper divisors (16829).

84115 is a wasteful number, since it uses less digits than its factorization.

84115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16828.

The product of its digits is 160, while the sum is 19.

The square root of 84115 is about 290.0258609159. The cubic root of 84115 is about 43.8151681861.

The spelling of 84115 in words is "eighty-four thousand, one hundred fifteen".