494439666 has 16 divisors (see below), whose sum is σ = 1130147904. Its totient is φ = 141268464.

The previous prime is 494439643. The next prime is 494439667. The reversal of 494439666 is 666934494.

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 7 ways as a sum of consecutive naturals, for example, 5886145 + ... + 5886228.

It is an arithmetic number, because the mean of its divisors is an integer number (70634244).

Almost surely, 2^494439666 is an apocalyptic number.

494439666 is an abundant number, since it is smaller than the sum of its proper divisors (635708238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

494439666 is a wasteful number, since it uses less digits than its factorization.

494439666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11772385.

The product of its digits is 3359232, while the sum is 51.

The square root of 494439666 is about 22235.9993254182. Note that the first 3 decimals coincide. The cubic root of 494439666 is about 790.7473918247.

The spelling of 494439666 in words is "four hundred ninety-four million, four hundred thirty-nine thousand, six hundred sixty-six".