283939 has 4 divisors (see below), whose sum is σ = 293760. Its totient is φ = 274120.

The previous prime is 283937. The next prime is 283949. The reversal of 283939 is 939382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939382 = 2 ⋅469691.

It is a cyclic number.

It is not a de Polignac number, because 283939 - 2¹ = 283937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (283937) 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, 4867 + ... + 4924.

It is an arithmetic number, because the mean of its divisors is an integer number (73440).

2²⁸³⁹³⁹ is an apocalyptic number.

283939 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

283939 is a deficient number, since it is larger than the sum of its proper divisors (9821).

283939 is an equidigital number, since it uses as much as digits as its factorization.

283939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9820.

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

The square root of 283939 is about 532.8592684753. The cubic root of 283939 is about 65.7266780572.

The spelling of 283939 in words is "two hundred eighty-three thousand, nine hundred thirty-nine".