283986 has 20 divisors (see below), whose sum is σ = 636702. Its totient is φ = 94608.

The previous prime is 283979. The next prime is 284003. The reversal of 283986 is 689382.

It can be written as a sum of positive squares in only one way, i.e., 281961 + 2025 = 531^2 + 45^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 283986.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 283986.

It is an unprimeable number.

283986 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 715 + ... + 1038.

2²⁸³⁹⁸⁶ is an apocalyptic number.

283986 is an abundant number, since it is smaller than the sum of its proper divisors (352716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

283986 is a wasteful number, since it uses less digits than its factorization.

283986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767 (or 1758 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 283986 is about 532.9033683511. The cubic root of 283986 is about 65.7303044035.

The spelling of 283986 in words is "two hundred eighty-three thousand, nine hundred eighty-six".