838429 has 2 divisors, whose sum is σ = 838430. Its totient is φ = 838428.

The previous prime is 838421. The next prime is 838441. The reversal of 838429 is 924838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 656100 + 182329 = 810^2 + 427^2 .

It is a cyclic number.

It is not a de Polignac number, because 838429 - 2³ = 838421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 838394 and 838403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (838421) 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, 419214 + 419215.

It is an arithmetic number, because the mean of its divisors is an integer number (419215).

2⁸³⁸⁴²⁹ is an apocalyptic number.

It is an amenable number.

838429 is a deficient number, since it is larger than the sum of its proper divisors (1).

838429 is an equidigital number, since it uses as much as digits as its factorization.

838429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 34.

The square root of 838429 is about 915.6576871299. The cubic root of 838429 is about 94.2950214915.

The spelling of 838429 in words is "eight hundred thirty-eight thousand, four hundred twenty-nine".