838399 has 2 divisors, whose sum is σ = 838400. Its totient is φ = 838398.

The previous prime is 838393. The next prime is 838403. The reversal of 838399 is 993838.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 838399 - 2³ = 838391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (838391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419199 + 419200.

It is an arithmetic number, because the mean of its divisors is an integer number (419200).

2⁸³⁸³⁹⁹ is an apocalyptic number.

838399 is a deficient number, since it is larger than the sum of its proper divisors (1).

838399 is an equidigital number, since it uses as much as digits as its factorization.

838399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 838399 is about 915.6413053156. The cubic root of 838399 is about 94.2938968149.

The spelling of 838399 in words is "eight hundred thirty-eight thousand, three hundred ninety-nine".