12704389 has 8 divisors (see below), whose sum is σ = 13886208. Its totient is φ = 11570880.

The previous prime is 12704387. The next prime is 12704399. The reversal of 12704389 is 98340721.

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

It is not a de Polignac number, because 12704389 - 2¹ = 12704387 is a prime.

It is a super-2 number, since 2×12704389² = 322802999726642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12704387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11527 + ... + 12580.

It is an arithmetic number, because the mean of its divisors is an integer number (1735776).

Almost surely, 2^12704389 is an apocalyptic number.

It is an amenable number.

12704389 is a deficient number, since it is larger than the sum of its proper divisors (1181819).

12704389 is a wasteful number, since it uses less digits than its factorization.

12704389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24155.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 12704389 is about 3564.3216745967. The cubic root of 12704389 is about 233.3375289495.

The spelling of 12704389 in words is "twelve million, seven hundred four thousand, three hundred eighty-nine".