1309109 has 8 divisors (see below), whose sum is σ = 1349760. Its totient is φ = 1269216.

The previous prime is 1309103. The next prime is 1309117. The reversal of 1309109 is 9019031.

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 1309109 - 2⁴ = 1309093 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 (1309103) 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, 5654 + ... + 5880.

It is an arithmetic number, because the mean of its divisors is an integer number (168720).

2^1309109 is an apocalyptic number.

It is an amenable number.

1309109 is a deficient number, since it is larger than the sum of its proper divisors (40651).

1309109 is an equidigital number, since it uses as much as digits as its factorization.

1309109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 1309109 is about 1144.1630128614. The cubic root of 1309109 is about 109.3936054335.

The spelling of 1309109 in words is "one million, three hundred nine thousand, one hundred nine".