4809649 has 8 divisors (see below), whose sum is σ = 5239080. Its totient is φ = 4388736.

The previous prime is 4809643. The next prime is 4809653. The reversal of 4809649 is 9469084.

It can be written as a sum of positive squares in 4 ways, for example, as 400 + 4809249 = 20^2 + 2193^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4809649 - 2⁹ = 4809137 is a prime.

It is a super-3 number, since 3×4809649³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4809643) 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, 922 + ... + 3235.

It is an arithmetic number, because the mean of its divisors is an integer number (654885).

Almost surely, 2^4809649 is an apocalyptic number.

It is an amenable number.

4809649 is a deficient number, since it is larger than the sum of its proper divisors (429431).

4809649 is a wasteful number, since it uses less digits than its factorization.

4809649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4259.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 4809649 is about 2193.0911973742. The cubic root of 4809649 is about 168.7994890972.

The spelling of 4809649 in words is "four million, eight hundred nine thousand, six hundred forty-nine".