12039109 has 4 divisors (see below), whose sum is σ = 12266316. Its totient is φ = 11811904.

The previous prime is 12039107. The next prime is 12039113. The reversal of 12039109 is 90193021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90193021 = 2281 ⋅39541.

It can be written as a sum of positive squares in 2 ways, for example, as 5536609 + 6502500 = 2353^2 + 2550^2 .

It is a cyclic number.

It is not a de Polignac number, because 12039109 - 2¹ = 12039107 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 (12039107) 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, 113524 + ... + 113629.

It is an arithmetic number, because the mean of its divisors is an integer number (3066579).

Almost surely, 2^12039109 is an apocalyptic number.

It is an amenable number.

12039109 is a deficient number, since it is larger than the sum of its proper divisors (227207).

12039109 is an equidigital number, since it uses as much as digits as its factorization.

12039109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227206.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 12039109 is about 3469.7419212385. The cubic root of 12039109 is about 229.1912934122.

The spelling of 12039109 in words is "twelve million, thirty-nine thousand, one hundred nine".