4406400666 has 24 divisors (see below), whose sum is σ = 9548514144. Its totient is φ = 1468598280.

The previous prime is 4406400659. The next prime is 4406400671. The reversal of 4406400666 is 6660046044.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4406400666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179845 + ... + 202871.

It is an arithmetic number, because the mean of its divisors is an integer number (397854756).

Almost surely, 2^4406400666 is an apocalyptic number.

4406400666 is an abundant number, since it is smaller than the sum of its proper divisors (5142113478).

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

4406400666 is a wasteful number, since it uses less digits than its factorization.

4406400666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33666 (or 33663 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 4406400666 is about 66380.7251090254. The cubic root of 4406400666 is about 1639.4367322536.

The spelling of 4406400666 in words is "four billion, four hundred six million, four hundred thousand, six hundred sixty-six".