838169 has 2 divisors, whose sum is σ = 838170. Its totient is φ = 838168.

The previous prime is 838157. The next prime is 838171. The reversal of 838169 is 961838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462400 + 375769 = 680^2 + 613^2 .

It is a cyclic number.

It is not a de Polignac number, because 838169 - 2⁴ = 838153 is a prime.

It is a super-2 number, since 2×838169² = 1405054545122, which contains 22 as substring.

Together with 838171, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (838139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419084 + 419085.

It is an arithmetic number, because the mean of its divisors is an integer number (419085).

2⁸³⁸¹⁶⁹ is an apocalyptic number.

It is an amenable number.

838169 is a deficient number, since it is larger than the sum of its proper divisors (1).

838169 is an equidigital number, since it uses as much as digits as its factorization.

838169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 838169 is about 915.5157016676. The cubic root of 838169 is about 94.2852734030.

The spelling of 838169 in words is "eight hundred thirty-eight thousand, one hundred sixty-nine".