168393 has 4 divisors (see below), whose sum is σ = 224528. Its totient is φ = 112260.

The previous prime is 168391. The next prime is 168409. The reversal of 168393 is 393861.

168393 is nontrivially palindromic in base 6.

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.

It is not a de Polignac number, because 168393 - 2¹ = 168391 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 168393.

It is not an unprimeable number, because it can be changed into a prime (168391) 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, 28063 + ... + 28068.

It is an arithmetic number, because the mean of its divisors is an integer number (56132).

2¹⁶⁸³⁹³ is an apocalyptic number.

It is an amenable number.

168393 is a deficient number, since it is larger than the sum of its proper divisors (56135).

168393 is an equidigital number, since it uses as much as digits as its factorization.

168393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56134.

The product of its digits is 3888, while the sum is 30.

The square root of 168393 is about 410.3571615069. The cubic root of 168393 is about 55.2214761005.

It can be divided in two parts, 168 and 393, that added together give a triangular number (561 = T₃₃).

The spelling of 168393 in words is "one hundred sixty-eight thousand, three hundred ninety-three".