494439668 has 12 divisors (see below), whose sum is σ = 865536000. Its totient is φ = 247143672.

The previous prime is 494439667. The next prime is 494439721. The reversal of 494439668 is 866934494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494439667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2918 + ... + 31581.

It is an arithmetic number, because the mean of its divisors is an integer number (72128000).

Almost surely, 2^494439668 is an apocalyptic number.

It is an amenable number.

494439668 is a deficient number, since it is larger than the sum of its proper divisors (371096332).

494439668 is a wasteful number, since it uses less digits than its factorization.

494439668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38086 (or 38084 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 53.

The square root of 494439668 is about 22235.9993703903. Note that the first 3 decimals coincide. The cubic root of 494439668 is about 790.7473928909.

The spelling of 494439668 in words is "four hundred ninety-four million, four hundred thirty-nine thousand, six hundred sixty-eight".