1289109 has 8 divisors (see below), whose sum is σ = 1726912. Its totient is φ = 855360.

The previous prime is 1289083. The next prime is 1289111. The reversal of 1289109 is 9019821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1289109 - 2⁵ = 1289077 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 (1289129) 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, 169 + ... + 1614.

It is an arithmetic number, because the mean of its divisors is an integer number (215864).

2^1289109 is an apocalyptic number.

It is an amenable number.

1289109 is a deficient number, since it is larger than the sum of its proper divisors (437803).

1289109 is a wasteful number, since it uses less digits than its factorization.

1289109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1289109 is about 1135.3893605279. The cubic root of 1289109 is about 108.8336547504.

The spelling of 1289109 in words is "one million, two hundred eighty-nine thousand, one hundred nine".