287411491 has 2 divisors, whose sum is σ = 287411492. Its totient is φ = 287411490.

The previous prime is 287411477. The next prime is 287411561. The reversal of 287411491 is 194114782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 287411491 - 2⁵ = 287411459 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 287411491.

It is not a weakly prime, because it can be changed into another prime (287411471) 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, 143705745 + 143705746.

It is an arithmetic number, because the mean of its divisors is an integer number (143705746).

Almost surely, 2^287411491 is an apocalyptic number.

287411491 is a deficient number, since it is larger than the sum of its proper divisors (1).

287411491 is an equidigital number, since it uses as much as digits as its factorization.

287411491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 37.

The square root of 287411491 is about 16953.2147688868. The cubic root of 287411491 is about 659.9353250063.

It can be divided in two parts, 2874 and 11491, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 287411491 in words is "two hundred eighty-seven million, four hundred eleven thousand, four hundred ninety-one".