8400811 has 2 divisors, whose sum is σ = 8400812. Its totient is φ = 8400810.

The previous prime is 8400797. The next prime is 8400823. The reversal of 8400811 is 1180048.

8400811 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8400811 - 2⁷ = 8400683 is a prime.

It is not a weakly prime, because it can be changed into another prime (8400841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200405 + 4200406.

It is an arithmetic number, because the mean of its divisors is an integer number (4200406).

Almost surely, 2^8400811 is an apocalyptic number.

8400811 is a deficient number, since it is larger than the sum of its proper divisors (1).

8400811 is an equidigital number, since it uses as much as digits as its factorization.

8400811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 8400811 is about 2898.4152566532. The cubic root of 8400811 is about 203.2858131957.

Adding to 8400811 its reverse (1180048), we get a palindrome (9580859).

The spelling of 8400811 in words is "eight million, four hundred thousand, eight hundred eleven".