400055827 has 2 divisors, whose sum is σ = 400055828. Its totient is φ = 400055826.

The previous prime is 400055809. The next prime is 400055867. The reversal of 400055827 is 728550004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400055827 - 2⁷ = 400055699 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (400055807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200027913 + 200027914.

It is an arithmetic number, because the mean of its divisors is an integer number (200027914).

Almost surely, 2^400055827 is an apocalyptic number.

400055827 is a deficient number, since it is larger than the sum of its proper divisors (1).

400055827 is an equidigital number, since it uses as much as digits as its factorization.

400055827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 400055827 is about 20001.3956263057. The cubic root of 400055827 is about 736.8405762046.

The spelling of 400055827 in words is "four hundred million, fifty-five thousand, eight hundred twenty-seven".