400868211 has 16 divisors (see below), whose sum is σ = 566845344. Its totient is φ = 251119104.

The previous prime is 400868207. The next prime is 400868227. The reversal of 400868211 is 112868004.

It is not a de Polignac number, because 400868211 - 2² = 400868207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400868411) 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 in 15 ways as a sum of consecutive naturals, for example, 27285 + ... + 39321.

It is an arithmetic number, because the mean of its divisors is an integer number (35427834).

Almost surely, 2^400868211 is an apocalyptic number.

400868211 is a deficient number, since it is larger than the sum of its proper divisors (165977133).

400868211 is a wasteful number, since it uses less digits than its factorization.

400868211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12710.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 400868211 is about 20021.6935097908. The cubic root of 400868211 is about 737.3390006117.

The spelling of 400868211 in words is "four hundred million, eight hundred sixty-eight thousand, two hundred eleven".