494942317 has 2 divisors, whose sum is σ = 494942318. Its totient is φ = 494942316.

The previous prime is 494942309. The next prime is 494942321. The reversal of 494942317 is 713249494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 374074281 + 120868036 = 19341^2 + 10994^2 .

It is a cyclic number.

It is not a de Polignac number, because 494942317 - 2³ = 494942309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494942017) 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, 247471158 + 247471159.

It is an arithmetic number, because the mean of its divisors is an integer number (247471159).

Almost surely, 2^494942317 is an apocalyptic number.

It is an amenable number.

494942317 is a deficient number, since it is larger than the sum of its proper divisors (1).

494942317 is an equidigital number, since it uses as much as digits as its factorization.

494942317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 494942317 is about 22247.2990944968. The cubic root of 494942317 is about 791.0152609436.

The spelling of 494942317 in words is "four hundred ninety-four million, nine hundred forty-two thousand, three hundred seventeen".