287090089 has 8 divisors (see below), whose sum is σ = 337280832. Its totient is φ = 240914640.

The previous prime is 287090081. The next prime is 287090123. The reversal of 287090089 is 980090782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 287090089 - 2³ = 287090081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287090081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003669 + ... + 1003954.

It is an arithmetic number, because the mean of its divisors is an integer number (42160104).

Almost surely, 2^287090089 is an apocalyptic number.

It is an amenable number.

287090089 is a deficient number, since it is larger than the sum of its proper divisors (50190743).

287090089 is a wasteful number, since it uses less digits than its factorization.

287090089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007647.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 287090089 is about 16943.7330302386. The cubic root of 287090089 is about 659.6892392232.

The spelling of 287090089 in words is "two hundred eighty-seven million, ninety thousand, eighty-nine".