8090909 has 4 divisors (see below), whose sum is σ = 8263104. Its totient is φ = 7918716.

The previous prime is 8090897. The next prime is 8090911. The reversal of 8090909 is 9090908.

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 a de Polignac number, because none of the positive numbers 2^k-8090909 is a prime.

It is a Duffinian number.

8090909 is a modest number, since divided by 909 gives 809 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8090939) 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, 86027 + ... + 86120.

It is an arithmetic number, because the mean of its divisors is an integer number (2065776).

Almost surely, 2^8090909 is an apocalyptic number.

It is an amenable number.

8090909 is a deficient number, since it is larger than the sum of its proper divisors (172195).

8090909 is a wasteful number, since it uses less digits than its factorization.

8090909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172194.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 8090909 is about 2844.4523198676. The cubic root of 8090909 is about 200.7547233806.

Subtracting 8090909 from its reverse (9090908), we obtain a palindrome (999999).

The spelling of 8090909 in words is "eight million, ninety thousand, nine hundred nine".