494398417 has 2 divisors, whose sum is σ = 494398418. Its totient is φ = 494398416.

The previous prime is 494398379. The next prime is 494398439. The reversal of 494398417 is 714893494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 480530241 + 13868176 = 21921^2 + 3724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494398417 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (494392417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247199208 + 247199209.

It is an arithmetic number, because the mean of its divisors is an integer number (247199209).

Almost surely, 2^494398417 is an apocalyptic number.

It is an amenable number.

494398417 is a deficient number, since it is larger than the sum of its proper divisors (1).

494398417 is an equidigital number, since it uses as much as digits as its factorization.

494398417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 494398417 is about 22235.0717786114. The cubic root of 494398417 is about 790.7254016484.

The spelling of 494398417 in words is "four hundred ninety-four million, three hundred ninety-eight thousand, four hundred seventeen".