12838477 has 2 divisors, whose sum is σ = 12838478. Its totient is φ = 12838476.

The previous prime is 12838429. The next prime is 12838481. The reversal of 12838477 is 77483821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12752041 + 86436 = 3571^2 + 294^2 .

It is an emirp because it is prime and its reverse (77483821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12838477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12838877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6419238 + 6419239.

It is an arithmetic number, because the mean of its divisors is an integer number (6419239).

Almost surely, 2^12838477 is an apocalyptic number.

It is an amenable number.

12838477 is a deficient number, since it is larger than the sum of its proper divisors (1).

12838477 is an equidigital number, since it uses as much as digits as its factorization.

12838477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 40.

The square root of 12838477 is about 3583.0820532050. The cubic root of 12838477 is about 234.1555750682.

The spelling of 12838477 in words is "twelve million, eight hundred thirty-eight thousand, four hundred seventy-seven".