404342017 has 2 divisors, whose sum is σ = 404342018. Its totient is φ = 404342016.

The previous prime is 404342009. The next prime is 404342023. The reversal of 404342017 is 710243404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354342976 + 49999041 = 18824^2 + 7071^2 .

It is a cyclic number.

It is not a de Polignac number, because 404342017 - 2³ = 404342009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404341982 and 404342000.

It is not a weakly prime, because it can be changed into another prime (404342077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202171008 + 202171009.

It is an arithmetic number, because the mean of its divisors is an integer number (202171009).

Almost surely, 2^404342017 is an apocalyptic number.

It is an amenable number.

404342017 is a deficient number, since it is larger than the sum of its proper divisors (1).

404342017 is an equidigital number, since it uses as much as digits as its factorization.

404342017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 404342017 is about 20108.2574332039. The cubic root of 404342017 is about 739.4627321263.

The spelling of 404342017 in words is "four hundred four million, three hundred forty-two thousand, seventeen".