1086289 has 4 divisors (see below), whose sum is σ = 1089124. Its totient is φ = 1083456.

The previous prime is 1086277. The next prime is 1086299. The reversal of 1086289 is 9826801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 705600 + 380689 = 840^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1086289 - 2⁵ = 1086257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1086259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 732 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (272281).

2^1086289 is an apocalyptic number.

It is an amenable number.

1086289 is a deficient number, since it is larger than the sum of its proper divisors (2835).

1086289 is an equidigital number, since it uses as much as digits as its factorization.

1086289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1086289 is about 1042.2518889405. The cubic root of 1086289 is about 102.7973203539.

The spelling of 1086289 in words is "one million, eighty-six thousand, two hundred eighty-nine".