12439017 has 6 divisors (see below), whose sum is σ = 17967482. Its totient is φ = 8292672.

The previous prime is 12439013. The next prime is 12439039. The reversal of 12439017 is 71093421.

12439017 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11048976 + 1390041 = 3324^2 + 1179^2 .

It is not a de Polignac number, because 12439017 - 2² = 12439013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12439013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 691048 + ... + 691065.

Almost surely, 2^12439017 is an apocalyptic number.

It is an amenable number.

12439017 is a deficient number, since it is larger than the sum of its proper divisors (5528465).

12439017 is a wasteful number, since it uses less digits than its factorization.

12439017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382119 (or 1382116 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 12439017 is about 3526.8990629163. The cubic root of 12439017 is about 231.7014155790.

The spelling of 12439017 in words is "twelve million, four hundred thirty-nine thousand, seventeen".