4642809 has 4 divisors (see below), whose sum is σ = 6190416. Its totient is φ = 3095204.

The previous prime is 4642789. The next prime is 4642811. The reversal of 4642809 is 9082464.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4642809 - 2¹¹ = 4640761 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 4642809.

It is not an unprimeable number, because it can be changed into a prime (4642889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773799 + ... + 773804.

It is an arithmetic number, because the mean of its divisors is an integer number (1547604).

Almost surely, 2^4642809 is an apocalyptic number.

It is an amenable number.

4642809 is a deficient number, since it is larger than the sum of its proper divisors (1547607).

4642809 is a wasteful number, since it uses less digits than its factorization.

4642809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547606.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 4642809 is about 2154.7178469582. The cubic root of 4642809 is about 166.8246692748.

The spelling of 4642809 in words is "four million, six hundred forty-two thousand, eight hundred nine".