4989666 has 64 divisors (see below), whose sum is σ = 12026880. Its totient is φ = 1362240.

The previous prime is 4989641. The next prime is 4989697. The reversal of 4989666 is 6669894.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28756 + ... + 28928.

It is an arithmetic number, because the mean of its divisors is an integer number (187920).

Almost surely, 2^4989666 is an apocalyptic number.

4989666 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 4989666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6013440).

4989666 is an abundant number, since it is smaller than the sum of its proper divisors (7037214).

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

4989666 is a wasteful number, since it uses less digits than its factorization.

4989666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231.

The product of its digits is 559872, while the sum is 48.

The square root of 4989666 is about 2233.7560296505. The cubic root of 4989666 is about 170.8797074710.

The spelling of 4989666 in words is "four million, nine hundred eighty-nine thousand, six hundred sixty-six".