538399 has 2 divisors, whose sum is σ = 538400. Its totient is φ = 538398.

The previous prime is 538397. The next prime is 538411. The reversal of 538399 is 993835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 538399 - 2¹ = 538397 is a prime.

Together with 538397, 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 (538397) 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 as a sum of consecutive naturals, namely, 269199 + 269200.

It is an arithmetic number, because the mean of its divisors is an integer number (269200).

2⁵³⁸³⁹⁹ is an apocalyptic number.

538399 is a deficient number, since it is larger than the sum of its proper divisors (1).

538399 is an equidigital number, since it uses as much as digits as its factorization.

538399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 37.

The square root of 538399 is about 733.7567716894. The cubic root of 538399 is about 81.3519713774.

The spelling of 538399 in words is "five hundred thirty-eight thousand, three hundred ninety-nine".