287449 has 2 divisors, whose sum is σ = 287450. Its totient is φ = 287448.

The previous prime is 287437. The next prime is 287491. The reversal of 287449 is 944782.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160000 + 127449 = 400^2 + 357^2 .

It is a cyclic number.

It is not a de Polignac number, because 287449 - 2⁷ = 287321 is a prime.

287449 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (287149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143724 + 143725.

It is an arithmetic number, because the mean of its divisors is an integer number (143725).

2²⁸⁷⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

287449 is a deficient number, since it is larger than the sum of its proper divisors (1).

287449 is an equidigital number, since it uses as much as digits as its factorization.

287449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 287449 is about 536.1427048837. The cubic root of 287449 is about 65.9964032322.

The spelling of 287449 in words is "two hundred eighty-seven thousand, four hundred forty-nine".