283945 has 8 divisors (see below), whose sum is σ = 344520. Its totient is φ = 224640.

The previous prime is 283937. The next prime is 283949. The reversal of 283945 is 549382.

It can be written as a sum of positive squares in 4 ways, for example, as 26896 + 257049 = 164^2 + 507^2 .

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

It is not a de Polignac number, because 283945 - 2³ = 283937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (283949) 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, 285 + ... + 805.

It is an arithmetic number, because the mean of its divisors is an integer number (43065).

2²⁸³⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

283945 is a deficient number, since it is larger than the sum of its proper divisors (60575).

283945 is a wasteful number, since it uses less digits than its factorization.

283945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635.

The product of its digits is 8640, while the sum is 31.

The square root of 283945 is about 532.8648984499. The cubic root of 283945 is about 65.7271410173.

The spelling of 283945 in words is "two hundred eighty-three thousand, nine hundred forty-five".