403901 has 2 divisors, whose sum is σ = 403902. Its totient is φ = 403900.

The previous prime is 403889. The next prime is 403933. The reversal of 403901 is 109304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403225 + 676 = 635^2 + 26^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-403901 is a prime.

It is equal to p₃₄₁₄₅ and since 403901 and 34145 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 403901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403951) 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, 201950 + 201951.

It is an arithmetic number, because the mean of its divisors is an integer number (201951).

2⁴⁰³⁹⁰¹ is an apocalyptic number.

It is an amenable number.

403901 is a deficient number, since it is larger than the sum of its proper divisors (1).

403901 is an equidigital number, since it uses as much as digits as its factorization.

403901 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 403901 is about 635.5320605603. The cubic root of 403901 is about 73.9193789615.

The spelling of 403901 in words is "four hundred three thousand, nine hundred one".