84281 has 4 divisors (see below), whose sum is σ = 84864. Its totient is φ = 83700.

The previous prime is 84263. The next prime is 84299. The reversal of 84281 is 18248.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (84263) and next prime (84299).

It is a cyclic number.

It is not a de Polignac number, because 84281 - 2¹⁰ = 83257 is a prime.

It is a super-2 number, since 2×84281² = 14206573922, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 84281.

It is not an unprimeable number, because it can be changed into a prime (84211) 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, 116 + ... + 426.

It is an arithmetic number, because the mean of its divisors is an integer number (21216).

2⁸⁴²⁸¹ is an apocalyptic number.

It is an amenable number.

84281 is a deficient number, since it is larger than the sum of its proper divisors (583).

84281 is a wasteful number, since it uses less digits than its factorization.

84281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582.

The product of its digits is 512, while the sum is 23.

The square root of 84281 is about 290.3119012373. The cubic root of 84281 is about 43.8439721590.

The spelling of 84281 in words is "eighty-four thousand, two hundred eighty-one".