7904317 has 2 divisors, whose sum is σ = 7904318. Its totient is φ = 7904316.

The previous prime is 7904311. The next prime is 7904321. The reversal of 7904317 is 7134097.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7722841 + 181476 = 2779^2 + 426^2 .

It is a cyclic number.

It is not a de Polignac number, because 7904317 - 2¹¹ = 7902269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7904311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3952158 + 3952159.

It is an arithmetic number, because the mean of its divisors is an integer number (3952159).

Almost surely, 2^7904317 is an apocalyptic number.

It is an amenable number.

7904317 is a deficient number, since it is larger than the sum of its proper divisors (1).

7904317 is an equidigital number, since it uses as much as digits as its factorization.

7904317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 7904317 is about 2811.4617194620. The cubic root of 7904317 is about 199.1994414725.

The spelling of 7904317 in words is "seven million, nine hundred four thousand, three hundred seventeen".