5009809 has 6 divisors (see below), whose sum is σ = 5827794. Its totient is φ = 4294080.

The previous prime is 5009803. The next prime is 5009821. The reversal of 5009809 is 9089005.

It can be written as a sum of positive squares in only one way, i.e., 4558225 + 451584 = 2135^2 + 672^2 .

It is not a de Polignac number, because 5009809 - 2¹⁵ = 4977041 is a prime.

5009809 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5009803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51072 + ... + 51169.

It is an arithmetic number, because the mean of its divisors is an integer number (971299).

Almost surely, 2^5009809 is an apocalyptic number.

It is an amenable number.

5009809 is a deficient number, since it is larger than the sum of its proper divisors (817985).

5009809 is a wasteful number, since it uses less digits than its factorization.

5009809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102255 (or 102248 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 5009809 is about 2238.2602618999. The cubic root of 5009809 is about 171.1093426508.

The spelling of 5009809 in words is "five million, nine thousand, eight hundred nine".