84918 has 8 divisors (see below), whose sum is σ = 169848. Its totient is φ = 28304.

The previous prime is 84913. The next prime is 84919. The reversal of 84918 is 81948.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

84918 is an admirable number.

It is a super-2 number, since 2×84918² = 14422133448, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 8 and base 11.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 84918.

It is not an unprimeable number, because it can be changed into a prime (84913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7071 + ... + 7082.

It is an arithmetic number, because the mean of its divisors is an integer number (21231).

2⁸⁴⁹¹⁸ is an apocalyptic number.

84918 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84924).

84918 is a wasteful number, since it uses less digits than its factorization.

84918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14158.

The product of its digits is 2304, while the sum is 30.

The square root of 84918 is about 291.4069319697. The cubic root of 84918 is about 43.9541533477.

Adding to 84918 its sum of digits (30), we get a palindrome (84948).

The spelling of 84918 in words is "eighty-four thousand, nine hundred eighteen".