5090809 has 4 divisors (see below), whose sum is σ = 5186916. Its totient is φ = 4994704.

The previous prime is 5090807. The next prime is 5090819. The reversal of 5090809 is 9080905.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2795584 + 2295225 = 1672^2 + 1515^2 .

It is a cyclic number.

It is not a de Polignac number, because 5090809 - 2¹ = 5090807 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.

5090809 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5090807) 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, 47974 + ... + 48079.

It is an arithmetic number, because the mean of its divisors is an integer number (1296729).

Almost surely, 2^5090809 is an apocalyptic number.

It is an amenable number.

5090809 is a deficient number, since it is larger than the sum of its proper divisors (96107).

5090809 is an equidigital number, since it uses as much as digits as its factorization.

5090809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96106.

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

The square root of 5090809 is about 2256.2821188850. The cubic root of 5090809 is about 172.0265981041.

Adding to 5090809 its product of nonzero digits (3240), we get a square (5094049 = 2257²).

The spelling of 5090809 in words is "five million, ninety thousand, eight hundred nine".