84397 has 4 divisors (see below), whose sum is σ = 86716. Its totient is φ = 82080.

The previous prime is 84391. The next prime is 84401. The reversal of 84397 is 79348.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64516 + 19881 = 254^2 + 141^2 .

It is a cyclic number.

It is not a de Polignac number, because 84397 - 2³ = 84389 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84391) 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, 1104 + ... + 1177.

It is an arithmetic number, because the mean of its divisors is an integer number (21679).

2⁸⁴³⁹⁷ is an apocalyptic number.

It is an amenable number.

84397 is a deficient number, since it is larger than the sum of its proper divisors (2319).

84397 is a wasteful number, since it uses less digits than its factorization.

84397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318.

The product of its digits is 6048, while the sum is 31.

The square root of 84397 is about 290.5116176679. The cubic root of 84397 is about 43.8640777947.

The spelling of 84397 in words is "eighty-four thousand, three hundred ninety-seven".