826403 has 2 divisors, whose sum is σ = 826404. Its totient is φ = 826402.

The previous prime is 826393. The next prime is 826411. The reversal of 826403 is 304628.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 826403 - 2⁶ = 826339 is a prime.

It is not a weakly prime, because it can be changed into another prime (826453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413201 + 413202.

It is an arithmetic number, because the mean of its divisors is an integer number (413202).

2⁸²⁶⁴⁰³ is an apocalyptic number.

826403 is a deficient number, since it is larger than the sum of its proper divisors (1).

826403 is an equidigital number, since it uses as much as digits as its factorization.

826403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 826403 is about 909.0671042338. The cubic root of 826403 is about 93.8420086338.

The spelling of 826403 in words is "eight hundred twenty-six thousand, four hundred three".