4809409 has 4 divisors (see below), whose sum is σ = 5246640. Its totient is φ = 4372180.

The previous prime is 4809401. The next prime is 4809443. The reversal of 4809409 is 9049084.

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 4809409 - 2³ = 4809401 is a prime.

It is a super-3 number, since 3×4809409³ (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 (4809401) 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, 218599 + ... + 218620.

It is an arithmetic number, because the mean of its divisors is an integer number (1311660).

Almost surely, 2^4809409 is an apocalyptic number.

It is an amenable number.

4809409 is a deficient number, since it is larger than the sum of its proper divisors (437231).

4809409 is a wasteful number, since it uses less digits than its factorization.

4809409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437230.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 4809409 is about 2193.0364794048. The cubic root of 4809409 is about 168.7966813697.

It can be divided in two parts, 480 and 9409, that added together give a palindrome (9889).

The spelling of 4809409 in words is "four million, eight hundred nine thousand, four hundred nine".