838235429 has 2 divisors, whose sum is σ = 838235430. Its totient is φ = 838235428.

The previous prime is 838235417. The next prime is 838235467. The reversal of 838235429 is 924532838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 836771329 + 1464100 = 28927^2 + 1210^2 .

It is a cyclic number.

It is not a de Polignac number, because 838235429 - 2²⁴ = 821458213 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 838235429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (838235329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419117714 + 419117715.

It is an arithmetic number, because the mean of its divisors is an integer number (419117715).

Almost surely, 2^838235429 is an apocalyptic number.

It is an amenable number.

838235429 is a deficient number, since it is larger than the sum of its proper divisors (1).

838235429 is an equidigital number, since it uses as much as digits as its factorization.

838235429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 44.

The square root of 838235429 is about 28952.2957466243. The cubic root of 838235429 is about 942.8776419381.

The spelling of 838235429 in words is "eight hundred thirty-eight million, two hundred thirty-five thousand, four hundred twenty-nine".