283993 has 4 divisors (see below), whose sum is σ = 298960. Its totient is φ = 269028.

The previous prime is 283979. The next prime is 284003. The reversal of 283993 is 399382.

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 a cyclic number.

It is not a de Polignac number, because 283993 - 2⁵ = 283961 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (283093) 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, 7455 + ... + 7492.

It is an arithmetic number, because the mean of its divisors is an integer number (74740).

2²⁸³⁹⁹³ is an apocalyptic number.

It is an amenable number.

283993 is a deficient number, since it is larger than the sum of its proper divisors (14967).

283993 is a wasteful number, since it uses less digits than its factorization.

283993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14966.

The product of its digits is 11664, while the sum is 34.

The square root of 283993 is about 532.9099361055. The cubic root of 283993 is about 65.7308444634.

The spelling of 283993 in words is "two hundred eighty-three thousand, nine hundred ninety-three".