867289 has 6 divisors (see below), whose sum is σ = 921614. Its totient is φ = 816000.

The previous prime is 867281. The next prime is 867301. The reversal of 867289 is 982768.

It can be written as a sum of positive squares in 3 ways, for example, as 366025 + 501264 = 605^2 + 708^2 .

It is not a de Polignac number, because 867289 - 2³ = 867281 is a prime.

It is a Duffinian number.

867289 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867281) 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 5 ways as a sum of consecutive naturals, for example, 1212 + ... + 1789.

2⁸⁶⁷²⁸⁹ is an apocalyptic number.

It is an amenable number.

867289 is a deficient number, since it is larger than the sum of its proper divisors (54325).

867289 is a wasteful number, since it uses less digits than its factorization.

867289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3035 (or 3018 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 867289 is about 931.2835228866. The cubic root of 867289 is about 95.3647656906.

It can be divided in two parts, 867 and 289, that added together give a square (1156 = 34²).

The spelling of 867289 in words is "eight hundred sixty-seven thousand, two hundred eighty-nine".