287879089 has 15 divisors (see below), whose sum is σ = 310475177. Its totient is φ = 266924844.

The previous prime is 287879087. The next prime is 287879107. The reversal of 287879089 is 980978782.

The square root of 287879089 is 16967.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 287879089 - 2¹ = 287879087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287879083) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 6125064 + ... + 6125110.

Almost surely, 2^287879089 is an apocalyptic number.

287879089 is the 16967-th square number.

287879089 is the 8484-th centered octagonal number.

It is an amenable number.

287879089 is a deficient number, since it is larger than the sum of its proper divisors (22596088).

287879089 is an frugal number, since it uses more digits than its factorization.

287879089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 58.

The cubic root of 287879089 is about 660.2930203323.

The spelling of 287879089 in words is "two hundred eighty-seven million, eight hundred seventy-nine thousand, eighty-nine".