489791966 has 4 divisors (see below), whose sum is σ = 734687952. Its totient is φ = 244895982.

The previous prime is 489791959. The next prime is 489791987. The reversal of 489791966 is 669197984.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122447990 + ... + 122447993.

It is an arithmetic number, because the mean of its divisors is an integer number (183671988).

Almost surely, 2^489791966 is an apocalyptic number.

489791966 is a deficient number, since it is larger than the sum of its proper divisors (244895986).

489791966 is a wasteful number, since it uses less digits than its factorization.

489791966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244895985.

The product of its digits is 5878656, while the sum is 59.

The square root of 489791966 is about 22131.2441132441. The cubic root of 489791966 is about 788.2619301119.

The spelling of 489791966 in words is "four hundred eighty-nine million, seven hundred ninety-one thousand, nine hundred sixty-six".