4866809 has 8 divisors (see below), whose sum is σ = 5061960. Its totient is φ = 4673536.

The previous prime is 4866791. The next prime is 4866821. The reversal of 4866809 is 9086684.

It can be written as a sum of positive squares in 4 ways, for example, as 1525225 + 3341584 = 1235^2 + 1828^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4866809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4866859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7127 + ... + 7779.

It is an arithmetic number, because the mean of its divisors is an integer number (632745).

Almost surely, 2^4866809 is an apocalyptic number.

It is an amenable number.

4866809 is a deficient number, since it is larger than the sum of its proper divisors (195151).

4866809 is a wasteful number, since it uses less digits than its factorization.

4866809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 4866809 is about 2206.0845405378. The cubic root of 4866809 is about 169.4655533995.

The spelling of 4866809 in words is "four million, eight hundred sixty-six thousand, eight hundred nine".