13028399 has 2 divisors, whose sum is σ = 13028400. Its totient is φ = 13028398.

The previous prime is 13028387. The next prime is 13028413. The reversal of 13028399 is 99382031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13028399 - 2¹² = 13024303 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13028359) 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, 6514199 + 6514200.

It is an arithmetic number, because the mean of its divisors is an integer number (6514200).

Almost surely, 2^13028399 is an apocalyptic number.

13028399 is a deficient number, since it is larger than the sum of its proper divisors (1).

13028399 is an equidigital number, since it uses as much as digits as its factorization.

13028399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 13028399 is about 3609.4873597230. The cubic root of 13028399 is about 235.3045636134.

The spelling of 13028399 in words is "thirteen million, twenty-eight thousand, three hundred ninety-nine".