84398 has 8 divisors (see below), whose sum is σ = 133320. Its totient is φ = 39960.

The previous prime is 84391. The next prime is 84401. The reversal of 84398 is 89348.

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

It is a plaindrome in base 16.

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 84398.

It is not an unprimeable number, because it can be changed into a prime (84391) by changing a digit.

84398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073 + ... + 1148.

It is an arithmetic number, because the mean of its divisors is an integer number (16665).

2⁸⁴³⁹⁸ is an apocalyptic number.

84398 is a deficient number, since it is larger than the sum of its proper divisors (48922).

84398 is a wasteful number, since it uses less digits than its factorization.

84398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242.

The product of its digits is 6912, while the sum is 32.

The square root of 84398 is about 290.5133387643. The cubic root of 84398 is about 43.8642510390.

Subtracting 84398 from its reverse (89348), we obtain a triangular number (4950 = T₉₉).

The spelling of 84398 in words is "eighty-four thousand, three hundred ninety-eight".