811490227 has 2 divisors, whose sum is σ = 811490228. Its totient is φ = 811490226.

The previous prime is 811490219. The next prime is 811490231. The reversal of 811490227 is 722094118.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 811490227 - 2³ = 811490219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 811490192 and 811490201.

It is not a weakly prime, because it can be changed into another prime (811490237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405745113 + 405745114.

It is an arithmetic number, because the mean of its divisors is an integer number (405745114).

Almost surely, 2^811490227 is an apocalyptic number.

811490227 is a deficient number, since it is larger than the sum of its proper divisors (1).

811490227 is an equidigital number, since it uses as much as digits as its factorization.

811490227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 811490227 is about 28486.6675306186. The cubic root of 811490227 is about 932.7410659807.

The spelling of 811490227 in words is "eight hundred eleven million, four hundred ninety thousand, two hundred twenty-seven".