12439671 has 8 divisors (see below), whose sum is σ = 16688640. Its totient is φ = 8241912.

The previous prime is 12439667. The next prime is 12439673. The reversal of 12439671 is 17693421.

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

It is not a de Polignac number, because 12439671 - 2² = 12439667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12439673) 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, 12231 + ... + 13208.

It is an arithmetic number, because the mean of its divisors is an integer number (2086080).

Almost surely, 2^12439671 is an apocalyptic number.

12439671 is a deficient number, since it is larger than the sum of its proper divisors (4248969).

12439671 is a wasteful number, since it uses less digits than its factorization.

12439671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25605.

The product of its digits is 9072, while the sum is 33.

The square root of 12439671 is about 3526.9917777052. The cubic root of 12439671 is about 231.7054761911.

The spelling of 12439671 in words is "twelve million, four hundred thirty-nine thousand, six hundred seventy-one".