4420042666 has 32 divisors (see below), whose sum is σ = 7216968528. Its totient is φ = 2018165760.

The previous prime is 4420042633. The next prime is 4420042673. The reversal of 4420042666 is 6662400244.

It can be written as a sum of positive squares in 8 ways, for example, as 3042074025 + 1377968641 = 55155^2 + 37121^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 981516 + ... + 986008.

Almost surely, 2^4420042666 is an apocalyptic number.

4420042666 is a deficient number, since it is larger than the sum of its proper divisors (2796925862).

4420042666 is a wasteful number, since it uses less digits than its factorization.

4420042666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4906.

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 4420042666 is about 66483.4014322372. The cubic root of 4420042666 is about 1641.1268611286.

The spelling of 4420042666 in words is "four billion, four hundred twenty million, forty-two thousand, six hundred sixty-six".