1209089 has 8 divisors (see below), whose sum is σ = 1408320. Its totient is φ = 1016496.

The previous prime is 1209083. The next prime is 1209107. The reversal of 1209089 is 9809021.

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 1209089 - 2⁴ = 1209073 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1209083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1259 + ... + 2000.

It is an arithmetic number, because the mean of its divisors is an integer number (176040).

2^1209089 is an apocalyptic number.

It is an amenable number.

1209089 is a deficient number, since it is larger than the sum of its proper divisors (199231).

1209089 is an equidigital number, since it uses as much as digits as its factorization.

1209089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1209089 is about 1099.5858311201. The cubic root of 1209089 is about 106.5334741624.

The spelling of 1209089 in words is "one million, two hundred nine thousand, eighty-nine".