406822811 has 2 divisors, whose sum is σ = 406822812. Its totient is φ = 406822810.

The previous prime is 406822777. The next prime is 406822883. The reversal of 406822811 is 118228604.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406822811 - 2¹⁴ = 406806427 is a prime.

It is not a weakly prime, because it can be changed into another prime (406852811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203411405 + 203411406.

It is an arithmetic number, because the mean of its divisors is an integer number (203411406).

Almost surely, 2^406822811 is an apocalyptic number.

406822811 is a deficient number, since it is larger than the sum of its proper divisors (1).

406822811 is an equidigital number, since it uses as much as digits as its factorization.

406822811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 406822811 is about 20169.8490574422. The cubic root of 406822811 is about 740.9719460034.

The spelling of 406822811 in words is "four hundred six million, eight hundred twenty-two thousand, eight hundred eleven".