12838739 has 2 divisors, whose sum is σ = 12838740. Its totient is φ = 12838738.

The previous prime is 12838733. The next prime is 12838747. The reversal of 12838739 is 93783821.

It is a weak prime.

It is an emirp because it is prime and its reverse (93783821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12838739 - 2¹⁶ = 12773203 is a prime.

It is a super-2 number, since 2×12838739² = 329666438220242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12838696 and 12838705.

It is not a weakly prime, because it can be changed into another prime (12838733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6419369 + 6419370.

It is an arithmetic number, because the mean of its divisors is an integer number (6419370).

Almost surely, 2^12838739 is an apocalyptic number.

12838739 is a deficient number, since it is larger than the sum of its proper divisors (1).

12838739 is an equidigital number, since it uses as much as digits as its factorization.

12838739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 12838739 is about 3583.1186137219. The cubic root of 12838739 is about 234.1571678933.

The spelling of 12838739 in words is "twelve million, eight hundred thirty-eight thousand, seven hundred thirty-nine".