401903 has 2 divisors, whose sum is σ = 401904. Its totient is φ = 401902.

The previous prime is 401887. The next prime is 401909. The reversal of 401903 is 309104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401903 - 2⁴ = 401887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401909) 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, 200951 + 200952.

It is an arithmetic number, because the mean of its divisors is an integer number (200952).

2⁴⁰¹⁹⁰³ is an apocalyptic number.

401903 is a deficient number, since it is larger than the sum of its proper divisors (1).

401903 is an equidigital number, since it uses as much as digits as its factorization.

401903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 401903 is about 633.9582005148. The cubic root of 401903 is about 73.7972903630.

The spelling of 401903 in words is "four hundred one thousand, nine hundred three".