838091 has 2 divisors, whose sum is σ = 838092. Its totient is φ = 838090.

The previous prime is 838069. The next prime is 838093. The reversal of 838091 is 190838.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-838091 is a prime.

Together with 838093, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 838091.

It is not a weakly prime, because it can be changed into another prime (838093) 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, 419045 + 419046.

It is an arithmetic number, because the mean of its divisors is an integer number (419046).

2⁸³⁸⁰⁹¹ is an apocalyptic number.

838091 is a deficient number, since it is larger than the sum of its proper divisors (1).

838091 is an equidigital number, since it uses as much as digits as its factorization.

838091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 838091 is about 915.4731017348. The cubic root of 838091 is about 94.2823485833.

The spelling of 838091 in words is "eight hundred thirty-eight thousand, ninety-one".