404040317 has 2 divisors, whose sum is σ = 404040318. Its totient is φ = 404040316.

The previous prime is 404040311. The next prime is 404040323. The reversal of 404040317 is 713040404.

It is a balanced prime because it is at equal distance from previous prime (404040311) and next prime (404040323).

It can be written as a sum of positive squares in only one way, i.e., 390892441 + 13147876 = 19771^2 + 3626^2 .

It is a cyclic number.

It is not a de Polignac number, because 404040317 - 2²⁴ = 387263101 is a prime.

It is a super-2 number, since 2×404040317² = 326497155522920978, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 404040292 and 404040301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404040311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202020158 + 202020159.

It is an arithmetic number, because the mean of its divisors is an integer number (202020159).

Almost surely, 2^404040317 is an apocalyptic number.

It is an amenable number.

404040317 is a deficient number, since it is larger than the sum of its proper divisors (1).

404040317 is an equidigital number, since it uses as much as digits as its factorization.

404040317 is an evil number, because the sum of its binary digits is even.

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

The square root of 404040317 is about 20100.7541400814. The cubic root of 404040317 is about 739.2787695339.

The spelling of 404040317 in words is "four hundred four million, forty thousand, three hundred seventeen".