400068811 has 2 divisors, whose sum is σ = 400068812. Its totient is φ = 400068810.

The previous prime is 400068797. The next prime is 400068829. The reversal of 400068811 is 118860004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400068811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400068811.

It is not a weakly prime, because it can be changed into another prime (400068211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200034405 + 200034406.

It is an arithmetic number, because the mean of its divisors is an integer number (200034406).

Almost surely, 2^400068811 is an apocalyptic number.

400068811 is a deficient number, since it is larger than the sum of its proper divisors (1).

400068811 is an equidigital number, since it uses as much as digits as its factorization.

400068811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 400068811 is about 20001.7202010227. The cubic root of 400068811 is about 736.8485476208.

The spelling of 400068811 in words is "four hundred million, sixty-eight thousand, eight hundred eleven".