12490109 has 4 divisors (see below), whose sum is σ = 12755904. Its totient is φ = 12224316.

The previous prime is 12490103. The next prime is 12490147. The reversal of 12490109 is 90109421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12490109 - 2²⁰ = 11441533 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 (12490103) 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, 132827 + ... + 132920.

It is an arithmetic number, because the mean of its divisors is an integer number (3188976).

Almost surely, 2^12490109 is an apocalyptic number.

It is an amenable number.

12490109 is a deficient number, since it is larger than the sum of its proper divisors (265795).

12490109 is an equidigital number, since it uses as much as digits as its factorization.

12490109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265794.

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

The square root of 12490109 is about 3534.1348304783. The cubic root of 12490109 is about 232.0182122544.

The spelling of 12490109 in words is "twelve million, four hundred ninety thousand, one hundred nine".