4489382666 has 4 divisors (see below), whose sum is σ = 6734074002. Its totient is φ = 2244691332.

The previous prime is 4489382587. The next prime is 4489382683. The reversal of 4489382666 is 6662839844.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 4323720025 + 165662641 = 65755^2 + 12871^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1122345665 + ... + 1122345668.

Almost surely, 2^4489382666 is an apocalyptic number.

4489382666 is a deficient number, since it is larger than the sum of its proper divisors (2244691336).

4489382666 is a wasteful number, since it uses less digits than its factorization.

4489382666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244691335.

The product of its digits is 11943936, while the sum is 56.

The square root of 4489382666 is about 67002.8556555614. The cubic root of 4489382666 is about 1649.6641699134.

The spelling of 4489382666 in words is "four billion, four hundred eighty-nine million, three hundred eighty-two thousand, six hundred sixty-six".