408448811 has 2 divisors, whose sum is σ = 408448812. Its totient is φ = 408448810.

The previous prime is 408448769. The next prime is 408448813. The reversal of 408448811 is 118844804.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408448811 is a prime.

It is a Sophie Germain prime.

Together with 408448813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (408448813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204224405 + 204224406.

It is an arithmetic number, because the mean of its divisors is an integer number (204224406).

Almost surely, 2^408448811 is an apocalyptic number.

408448811 is a deficient number, since it is larger than the sum of its proper divisors (1).

408448811 is an equidigital number, since it uses as much as digits as its factorization.

408448811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 408448811 is about 20210.1165508762. The cubic root of 408448811 is about 741.9578123756.

The spelling of 408448811 in words is "four hundred eight million, four hundred forty-eight thousand, eight hundred eleven".