223993 has 8 divisors (see below), whose sum is σ = 279360. Its totient is φ = 174480.

The previous prime is 223969. The next prime is 223999. The reversal of 223993 is 399322.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 223993 - 2⁹ = 223481 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (223999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1378 + ... + 1531.

It is an arithmetic number, because the mean of its divisors is an integer number (34920).

2²²³⁹⁹³ is an apocalyptic number.

It is an amenable number.

223993 is a deficient number, since it is larger than the sum of its proper divisors (55367).

223993 is a wasteful number, since it uses less digits than its factorization.

223993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2927.

The product of its digits is 2916, while the sum is 28.

The square root of 223993 is about 473.2789874905. The cubic root of 223993 is about 60.7311468082.

It can be divided in two parts, 2239 and 93, that added together give a palindrome (2332).

The spelling of 223993 in words is "two hundred twenty-three thousand, nine hundred ninety-three".