287859095989 has 2 divisors, whose sum is σ = 287859095990. Its totient is φ = 287859095988.

The previous prime is 287859095977. The next prime is 287859096013. The reversal of 287859095989 is 989590958782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182521200625 + 105337895364 = 427225^2 + 324558^2 .

It is a cyclic number.

It is not a de Polignac number, because 287859095989 - 2¹¹ = 287859093941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287859095969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143929547994 + 143929547995.

It is an arithmetic number, because the mean of its divisors is an integer number (143929547995).

Almost surely, 2^287859095989 is an apocalyptic number.

It is an amenable number.

287859095989 is a deficient number, since it is larger than the sum of its proper divisors (1).

287859095989 is an equidigital number, since it uses as much as digits as its factorization.

287859095989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1175731200, while the sum is 79.

The spelling of 287859095989 in words is "two hundred eighty-seven billion, eight hundred fifty-nine million, ninety-five thousand, nine hundred eighty-nine".