1206289 has 8 divisors (see below), whose sum is σ = 1385280. Its totient is φ = 1028976.

The previous prime is 1206277. The next prime is 1206307. The reversal of 1206289 is 9826021.

It is a happy number.

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 1206289 - 2¹⁵ = 1173521 is a prime.

It is a super-3 number, since 3×1206289³ = 5265933342645346707, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2502 + ... + 2944.

It is an arithmetic number, because the mean of its divisors is an integer number (173160).

2^1206289 is an apocalyptic number.

It is an amenable number.

1206289 is a deficient number, since it is larger than the sum of its proper divisors (178991).

1206289 is an equidigital number, since it uses as much as digits as its factorization.

1206289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1206289 is about 1098.3118864876. The cubic root of 1206289 is about 106.4511741039.

The spelling of 1206289 in words is "one million, two hundred six thousand, two hundred eighty-nine".