838403 has 2 divisors, whose sum is σ = 838404. Its totient is φ = 838402.

The previous prime is 838399. The next prime is 838421. The reversal of 838403 is 304838.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 838403 - 2² = 838399 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 838403.

It is not a weakly prime, because it can be changed into another prime (838463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419201 + 419202.

It is an arithmetic number, because the mean of its divisors is an integer number (419202).

2⁸³⁸⁴⁰³ is an apocalyptic number.

838403 is a deficient number, since it is larger than the sum of its proper divisors (1).

838403 is an equidigital number, since it uses as much as digits as its factorization.

838403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 838403 is about 915.6434895744. The cubic root of 838403 is about 94.2940467733.

The spelling of 838403 in words is "eight hundred thirty-eight thousand, four hundred three".