404004317 has 2 divisors, whose sum is σ = 404004318. Its totient is φ = 404004316.

The previous prime is 404004313. The next prime is 404004373. The reversal of 404004317 is 713400404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391287961 + 12716356 = 19781^2 + 3566^2 .

It is a cyclic number.

It is not a de Polignac number, because 404004317 - 2² = 404004313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404004292 and 404004301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404004311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202002158 + 202002159.

It is an arithmetic number, because the mean of its divisors is an integer number (202002159).

Almost surely, 2^404004317 is an apocalyptic number.

It is an amenable number.

404004317 is a deficient number, since it is larger than the sum of its proper divisors (1).

404004317 is an equidigital number, since it uses as much as digits as its factorization.

404004317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 404004317 is about 20099.8586313437. The cubic root of 404004317 is about 739.2568122975.

The spelling of 404004317 in words is "four hundred four million, four thousand, three hundred seventeen".