494085817 has 4 divisors (see below), whose sum is σ = 494226036. Its totient is φ = 493945600.

The previous prime is 494085811. The next prime is 494085887. The reversal of 494085817 is 718580494.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50183056 + 443902761 = 7084^2 + 21069^2 .

It is a cyclic number.

It is not a de Polignac number, because 494085817 - 2⁷ = 494085689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494085811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64684 + ... + 71917.

It is an arithmetic number, because the mean of its divisors is an integer number (123556509).

Almost surely, 2^494085817 is an apocalyptic number.

It is an amenable number.

494085817 is a deficient number, since it is larger than the sum of its proper divisors (140219).

494085817 is a wasteful number, since it uses less digits than its factorization.

494085817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140218.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 494085817 is about 22228.0412317415. The cubic root of 494085817 is about 790.5587122832.

It can be divided in two parts, 49408 and 5817, that added together give a square (55225 = 235²).

The spelling of 494085817 in words is "four hundred ninety-four million, eighty-five thousand, eight hundred seventeen".