4490040666 has 8 divisors (see below), whose sum is σ = 8980081344. Its totient is φ = 1496680220.

The previous prime is 4490040661. The next prime is 4490040673. The reversal of 4490040666 is 6660400944.

It is a sphenic number, since it is the product of 3 distinct primes.

4490040666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (4490040661) 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, 374170050 + ... + 374170061.

It is an arithmetic number, because the mean of its divisors is an integer number (1122510168).

Almost surely, 2^4490040666 is an apocalyptic number.

4490040666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4490040666 is a wasteful number, since it uses less digits than its factorization.

4490040666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748340116.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 4490040666 is about 67007.7657141320. The cubic root of 4490040666 is about 1649.7447619886.

The spelling of 4490040666 in words is "four billion, four hundred ninety million, forty thousand, six hundred sixty-six".