1009287 has 16 divisors (see below), whose sum is σ = 1548000. Its totient is φ = 649152.

The previous prime is 1009259. The next prime is 1009289. The reversal of 1009287 is 7829001.

It is not a de Polignac number, because 1009287 - 2⁷ = 1009159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1009287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139 + ... + 1427.

It is an arithmetic number, because the mean of its divisors is an integer number (96750).

2^1009287 is an apocalyptic number.

1009287 is a deficient number, since it is larger than the sum of its proper divisors (538713).

1009287 is a wasteful number, since it uses less digits than its factorization.

1009287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1009287 is about 1004.6327687270. The cubic root of 1009287 is about 100.3086132654.

It can be divided in two parts, 1009 and 287, that added together give a 4-th power (1296 = 6⁴).

The spelling of 1009287 in words is "one million, nine thousand, two hundred eighty-seven".