408403 has 2 divisors, whose sum is σ = 408404. Its totient is φ = 408402.

The previous prime is 408389. The next prime is 408413. The reversal of 408403 is 304804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408403 - 2¹⁷ = 277331 is a prime.

It is not a weakly prime, because it can be changed into another prime (408413) 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, 204201 + 204202.

It is an arithmetic number, because the mean of its divisors is an integer number (204202).

2⁴⁰⁸⁴⁰³ is an apocalyptic number.

408403 is a deficient number, since it is larger than the sum of its proper divisors (1).

408403 is an equidigital number, since it uses as much as digits as its factorization.

408403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 408403 is about 639.0641595333. The cubic root of 408403 is about 74.1930072384.

The spelling of 408403 in words is "four hundred eight thousand, four hundred three".