12839149 has 2 divisors, whose sum is σ = 12839150. Its totient is φ = 12839148.

The previous prime is 12839147. The next prime is 12839201. The reversal of 12839149 is 94193821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12744900 + 94249 = 3570^2 + 307^2 .

It is a cyclic number.

It is not a de Polignac number, because 12839149 - 2¹ = 12839147 is a prime.

Together with 12839147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12839147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6419574 + 6419575.

It is an arithmetic number, because the mean of its divisors is an integer number (6419575).

Almost surely, 2^12839149 is an apocalyptic number.

It is an amenable number.

12839149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12839149 is an equidigital number, since it uses as much as digits as its factorization.

12839149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 37.

The square root of 12839149 is about 3583.1758259957. The cubic root of 12839149 is about 234.1596604386.

The spelling of 12839149 in words is "twelve million, eight hundred thirty-nine thousand, one hundred forty-nine".