287072089 has 2 divisors, whose sum is σ = 287072090. Its totient is φ = 287072088.

The previous prime is 287072069. The next prime is 287072117. The reversal of 287072089 is 980270782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229007689 + 58064400 = 15133^2 + 7620^2 .

It is a cyclic number.

It is not a de Polignac number, because 287072089 - 2⁵ = 287072057 is a prime.

It is not a weakly prime, because it can be changed into another prime (287072029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143536044 + 143536045.

It is an arithmetic number, because the mean of its divisors is an integer number (143536045).

Almost surely, 2^287072089 is an apocalyptic number.

It is an amenable number.

287072089 is a deficient number, since it is larger than the sum of its proper divisors (1).

287072089 is an equidigital number, since it uses as much as digits as its factorization.

287072089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 287072089 is about 16943.2018520703. The cubic root of 287072089 is about 659.6754518502.

The spelling of 287072089 in words is "two hundred eighty-seven million, seventy-two thousand, eighty-nine".