12049109 has 2 divisors, whose sum is σ = 12049110. Its totient is φ = 12049108.

The previous prime is 12049099. The next prime is 12049133. The reversal of 12049109 is 90194021.

12049109 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11662225 + 386884 = 3415^2 + 622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12049109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12049189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6024554 + 6024555.

It is an arithmetic number, because the mean of its divisors is an integer number (6024555).

Almost surely, 2^12049109 is an apocalyptic number.

It is an amenable number.

12049109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12049109 is an equidigital number, since it uses as much as digits as its factorization.

12049109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 12049109 is about 3471.1826514893. The cubic root of 12049109 is about 229.2547332856.

The spelling of 12049109 in words is "twelve million, forty-nine thousand, one hundred nine".