84239844 has 96 divisors (see below), whose sum is σ = 225886080. Its totient is φ = 24219648.

The previous prime is 84239821. The next prime is 84239849. The reversal of 84239844 is 44893248.

It is a junction number, because it is equal to n+sod(n) for n = 84239796 and 84239805.

It is not an unprimeable number, because it can be changed into a prime (84239849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287362 + ... + 287654.

It is an arithmetic number, because the mean of its divisors is an integer number (2352980).

Almost surely, 2^84239844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84239844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112943040).

84239844 is an abundant number, since it is smaller than the sum of its proper divisors (141646236).

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

84239844 is a wasteful number, since it uses less digits than its factorization.

84239844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 427 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 84239844 is about 9178.2266260972. The cubic root of 84239844 is about 438.3683438457.

The spelling of 84239844 in words is "eighty-four million, two hundred thirty-nine thousand, eight hundred forty-four".