12896839 has 8 divisors (see below), whose sum is σ = 13649840. Its totient is φ = 12151296.

The previous prime is 12896833. The next prime is 12896857. The reversal of 12896839 is 93869821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12896839 is a prime.

It is a super-3 number, since 3×12896839³ (a number of 22 digits) contains 333 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 (12896833) 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, 1909 + ... + 5425.

It is an arithmetic number, because the mean of its divisors is an integer number (1706230).

Almost surely, 2^12896839 is an apocalyptic number.

12896839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12896839 is a deficient number, since it is larger than the sum of its proper divisors (753001).

12896839 is a wasteful number, since it uses less digits than its factorization.

12896839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3729.

The product of its digits is 186624, while the sum is 46.

The square root of 12896839 is about 3591.2169246650. The cubic root of 12896839 is about 234.5098520902.

It can be divided in two parts, 1289 and 6839, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 12896839 in words is "twelve million, eight hundred ninety-six thousand, eight hundred thirty-nine".