404017 has 2 divisors, whose sum is σ = 404018. Its totient is φ = 404016.

The previous prime is 404011. The next prime is 404021. The reversal of 404017 is 710404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389376 + 14641 = 624^2 + 121^2 .

It is a cyclic number.

It is not a de Polignac number, because 404017 - 2³ = 404009 is a prime.

It is not a weakly prime, because it can be changed into another prime (404011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202008 + 202009.

It is an arithmetic number, because the mean of its divisors is an integer number (202009).

2⁴⁰⁴⁰¹⁷ is an apocalyptic number.

It is an amenable number.

404017 is a deficient number, since it is larger than the sum of its proper divisors (1).

404017 is an equidigital number, since it uses as much as digits as its factorization.

404017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 404017 is about 635.6233161236. The cubic root of 404017 is about 73.9264548103.

The spelling of 404017 in words is "four hundred four thousand, seventeen", and thus it is an iban number.