400001227 has 2 divisors, whose sum is σ = 400001228. Its totient is φ = 400001226.

The previous prime is 400001201. The next prime is 400001233. The reversal of 400001227 is 722100004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400001227 - 2⁷ = 400001099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400001227.

It is not a weakly prime, because it can be changed into another prime (400001267) 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 as a sum of consecutive naturals, namely, 200000613 + 200000614.

It is an arithmetic number, because the mean of its divisors is an integer number (200000614).

Almost surely, 2^400001227 is an apocalyptic number.

400001227 is a deficient number, since it is larger than the sum of its proper divisors (1).

400001227 is an equidigital number, since it uses as much as digits as its factorization.

400001227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 400001227 is about 20000.0306749765. The cubic root of 400001227 is about 736.8070531117.

The spelling of 400001227 in words is "four hundred million, one thousand, two hundred twenty-seven".