84039 has 8 divisors (see below), whose sum is σ = 113520.
Its totient is φ = 55296.
The previous prime is 84017. The next prime is 84047. The reversal of 84039 is 93048.
Subtracting 84039 from its reverse (93048), we obtain a palindrome (9009).
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 84039 - 27 = 83911 is a prime.
It is a plaindrome in base 14.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (84059) by changing a digit.
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 7 ways as a sum of consecutive naturals, for example, 199 + ... + 455.
It is an arithmetic number, because the mean of its divisors is an integer number (14190).
284039 is an apocalyptic number.
84039 is a deficient number, since it is larger than the sum of its proper divisors (29481).
84039 is a wasteful number, since it uses less digits than its factorization.
84039 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 369.
The product of its (nonzero) digits is 864, while the sum is 24.
The square root of 84039 is about 289.8948085082.
The cubic root of 84039 is about 43.8019681774.
The spelling of 84039 in words is "eighty-four thousand, thirty-nine".