285949 has 2 divisors, whose sum is σ = 285950. Its totient is φ = 285948.

The previous prime is 285937. The next prime is 285953. The reversal of 285949 is 949582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257049 + 28900 = 507^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 285949 - 2¹³ = 277757 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142974 + 142975.

It is an arithmetic number, because the mean of its divisors is an integer number (142975).

2²⁸⁵⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

285949 is a deficient number, since it is larger than the sum of its proper divisors (1).

285949 is an equidigital number, since it uses as much as digits as its factorization.

285949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 285949 is about 534.7419938625. The cubic root of 285949 is about 65.8814062520.

The spelling of 285949 in words is "two hundred eighty-five thousand, nine hundred forty-nine".