283609 has 2 divisors, whose sum is σ = 283610. Its totient is φ = 283608.

The previous prime is 283607. The next prime is 283631. The reversal of 283609 is 906382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205209 + 78400 = 453^2 + 280^2 .

It is a cyclic number.

It is not a de Polignac number, because 283609 - 2¹ = 283607 is a prime.

Together with 283607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (283601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141804 + 141805.

It is an arithmetic number, because the mean of its divisors is an integer number (141805).

2²⁸³⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

283609 is a deficient number, since it is larger than the sum of its proper divisors (1).

283609 is an equidigital number, since it uses as much as digits as its factorization.

283609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 283609 is about 532.5495282131. The cubic root of 283609 is about 65.7012052010.

The spelling of 283609 in words is "two hundred eighty-three thousand, six hundred nine".