12689039 has 8 divisors (see below), whose sum is σ = 14217168. Its totient is φ = 11223360.

The previous prime is 12689029. The next prime is 12689051. The reversal of 12689039 is 93098621.

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 12689039 - 2¹² = 12684943 is a prime.

It is a super-2 number, since 2×12689039² = 322023421487042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12688993 and 12689011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12689029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15182 + ... + 15995.

It is an arithmetic number, because the mean of its divisors is an integer number (1777146).

Almost surely, 2^12689039 is an apocalyptic number.

12689039 is a deficient number, since it is larger than the sum of its proper divisors (1528129).

12689039 is a wasteful number, since it uses less digits than its factorization.

12689039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31225.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 12689039 is about 3562.1677388916. The cubic root of 12689039 is about 233.2435148632.

The spelling of 12689039 in words is "twelve million, six hundred eighty-nine thousand, thirty-nine".