838249 has 2 divisors, whose sum is σ = 838250. Its totient is φ = 838248.

The previous prime is 838247. The next prime is 838349. The reversal of 838249 is 942838.

838249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837225 + 1024 = 915^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 838249 - 2¹ = 838247 is a prime.

It is a super-2 number, since 2×838249² = 1405322772002, which contains 22 as substring.

Together with 838247, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (838247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419124 + 419125.

It is an arithmetic number, because the mean of its divisors is an integer number (419125).

2⁸³⁸²⁴⁹ is an apocalyptic number.

It is an amenable number.

838249 is a deficient number, since it is larger than the sum of its proper divisors (1).

838249 is an equidigital number, since it uses as much as digits as its factorization.

838249 is an evil number, because the sum of its binary digits is even.

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

The square root of 838249 is about 915.5593918474. The cubic root of 838249 is about 94.2882730295.

The spelling of 838249 in words is "eight hundred thirty-eight thousand, two hundred forty-nine".