4905609 has 8 divisors (see below), whose sum is σ = 6700512. Its totient is φ = 3190560.

The previous prime is 4905587. The next prime is 4905617. The reversal of 4905609 is 9065094.

It is a happy number.

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

It is not a de Polignac number, because 4905609 - 2⁵ = 4905577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4905609.

It is not an unprimeable number, because it can be changed into a prime (4905619) 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, 19819 + ... + 20064.

It is an arithmetic number, because the mean of its divisors is an integer number (837564).

Almost surely, 2^4905609 is an apocalyptic number.

It is an amenable number.

4905609 is a deficient number, since it is larger than the sum of its proper divisors (1794903).

4905609 is a wasteful number, since it uses less digits than its factorization.

4905609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39927.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 4905609 is about 2214.8609437163. The cubic root of 4905609 is about 169.9147092343.

The spelling of 4905609 in words is "four million, nine hundred five thousand, six hundred nine".