287859049 has 2 divisors, whose sum is σ = 287859050. Its totient is φ = 287859048.

The previous prime is 287859041. The next prime is 287859083. The reversal of 287859049 is 940958782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275560000 + 12299049 = 16600^2 + 3507^2 .

It is a cyclic number.

It is not a de Polignac number, because 287859049 - 2³ = 287859041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 287858987 and 287859005.

It is not a weakly prime, because it can be changed into another prime (287859041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143929524 + 143929525.

It is an arithmetic number, because the mean of its divisors is an integer number (143929525).

Almost surely, 2^287859049 is an apocalyptic number.

It is an amenable number.

287859049 is a deficient number, since it is larger than the sum of its proper divisors (1).

287859049 is an equidigital number, since it uses as much as digits as its factorization.

287859049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 287859049 is about 16966.4094315798. The cubic root of 287859049 is about 660.2776984145.

The spelling of 287859049 in words is "two hundred eighty-seven million, eight hundred fifty-nine thousand, forty-nine".