5036809 has 4 divisors (see below), whose sum is σ = 5159700. Its totient is φ = 4913920.

The previous prime is 5036789. The next prime is 5036821. The reversal of 5036809 is 9086305.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9086305 = 5 ⋅1817261.

It can be written as a sum of positive squares in 2 ways, for example, as 1056784 + 3980025 = 1028^2 + 1995^2 .

It is a cyclic number.

It is not a de Polignac number, because 5036809 - 2¹¹ = 5034761 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

5036809 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5036869) 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 3 ways as a sum of consecutive naturals, for example, 61384 + ... + 61465.

It is an arithmetic number, because the mean of its divisors is an integer number (1289925).

Almost surely, 2^5036809 is an apocalyptic number.

It is an amenable number.

5036809 is a deficient number, since it is larger than the sum of its proper divisors (122891).

5036809 is a wasteful number, since it uses less digits than its factorization.

5036809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122890.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 5036809 is about 2244.2836273519. The cubic root of 5036809 is about 171.4161858446.

The spelling of 5036809 in words is "five million, thirty-six thousand, eight hundred nine".