12435109 has 8 divisors (see below), whose sum is σ = 13304088. Its totient is φ = 11581440.

The previous prime is 12435103. The next prime is 12435121. The reversal of 12435109 is 90153421.

It can be written as a sum of positive squares in 4 ways, for example, as 1044484 + 11390625 = 1022^2 + 3375^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12435109 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 (12435103) 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, 2122 + ... + 5419.

It is an arithmetic number, because the mean of its divisors is an integer number (1663011).

Almost surely, 2^12435109 is an apocalyptic number.

It is an amenable number.

12435109 is a deficient number, since it is larger than the sum of its proper divisors (868979).

12435109 is an equidigital number, since it uses as much as digits as its factorization.

12435109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7655.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12435109 is about 3526.3449916309. The cubic root of 12435109 is about 231.6771482816.

It can be divided in two parts, 12435 and 109, that added together give a square (12544 = 112²).

The spelling of 12435109 in words is "twelve million, four hundred thirty-five thousand, one hundred nine".