12439129 has 8 divisors (see below), whose sum is σ = 13279680. Its totient is φ = 11617200.

The previous prime is 12439123. The next prime is 12439139. The reversal of 12439129 is 92193421.

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 12439129 - 2¹⁷ = 12308057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12439129.

It is not an unprimeable number, because it can be changed into a prime (12439123) 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, 3262 + ... + 5959.

It is an arithmetic number, because the mean of its divisors is an integer number (1659960).

It is a vampire number, since it can be written as 1349 ⋅ 9221 (with its own digits).

Almost surely, 2^12439129 is an apocalyptic number.

12439129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12439129 is a deficient number, since it is larger than the sum of its proper divisors (840551).

12439129 is an equidigital number, since it uses as much as digits as its factorization.

12439129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9311.

The product of its digits is 3888, while the sum is 31.

The square root of 12439129 is about 3526.9149408513. The cubic root of 12439129 is about 231.7021109844.

The spelling of 12439129 in words is "twelve million, four hundred thirty-nine thousand, one hundred twenty-nine".