12839434 has 4 divisors (see below), whose sum is σ = 19259154. Its totient is φ = 6419716.

The previous prime is 12839429. The next prime is 12839443. The reversal of 12839434 is 43493821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11730625 + 1108809 = 3425^2 + 1053^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12839434.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3209857 + ... + 3209860.

Almost surely, 2^12839434 is an apocalyptic number.

12839434 is a deficient number, since it is larger than the sum of its proper divisors (6419720).

12839434 is an equidigital number, since it uses as much as digits as its factorization.

12839434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6419719.

The product of its digits is 20736, while the sum is 34.

The square root of 12839434 is about 3583.2155949649. The cubic root of 12839434 is about 234.1613930303.

The spelling of 12839434 in words is "twelve million, eight hundred thirty-nine thousand, four hundred thirty-four".