4909866 has 32 divisors (see below), whose sum is σ = 11135040. Its totient is φ = 1430784.

The previous prime is 4909859. The next prime is 4909871. The reversal of 4909866 is 6689094.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175 + ... + 3138.

It is an arithmetic number, because the mean of its divisors is an integer number (347970).

Almost surely, 2^4909866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4909866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5567520).

4909866 is an abundant number, since it is smaller than the sum of its proper divisors (6225174).

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

4909866 is a wasteful number, since it uses less digits than its factorization.

4909866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3350.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 4909866 is about 2215.8217437330. The cubic root of 4909866 is about 169.9638446756.

It can be divided in two parts, 4909 and 866, that added together give a palindrome (5775).

The spelling of 4909866 in words is "four million, nine hundred nine thousand, eight hundred sixty-six".