227040809 has 4 divisors (see below), whose sum is σ = 227117904. Its totient is φ = 226963716.

The previous prime is 227040757. The next prime is 227040833. The reversal of 227040809 is 908040722.

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 227040809 - 2⁸ = 227040553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (227043809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33947 + ... + 40080.

It is an arithmetic number, because the mean of its divisors is an integer number (56779476).

Almost surely, 2^227040809 is an apocalyptic number.

It is an amenable number.

227040809 is a deficient number, since it is larger than the sum of its proper divisors (77095).

227040809 is an equidigital number, since it uses as much as digits as its factorization.

227040809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77094.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 227040809 is about 15067.8734066888. The cubic root of 227040809 is about 610.0535731861.

The spelling of 227040809 in words is "two hundred twenty-seven million, forty thousand, eight hundred nine".