494190517 has 2 divisors, whose sum is σ = 494190518. Its totient is φ = 494190516.

The previous prime is 494190511. The next prime is 494190533. The reversal of 494190517 is 715091494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424401201 + 69789316 = 20601^2 + 8354^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494190517 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 494190517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494190511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247095258 + 247095259.

It is an arithmetic number, because the mean of its divisors is an integer number (247095259).

Almost surely, 2^494190517 is an apocalyptic number.

It is an amenable number.

494190517 is a deficient number, since it is larger than the sum of its proper divisors (1).

494190517 is an equidigital number, since it uses as much as digits as its factorization.

494190517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 494190517 is about 22230.3962402833. The cubic root of 494190517 is about 790.6145498512.

The spelling of 494190517 in words is "four hundred ninety-four million, one hundred ninety thousand, five hundred seventeen".