400420440403967 has 2 divisors, whose sum is σ = 400420440403968. Its totient is φ = 400420440403966.

The previous prime is 400420440403939. The next prime is 400420440404113. The reversal of 400420440403967 is 769304044024004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400420440403967 - 2⁶ = 400420440403903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400420440409967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200210220201983 + 200210220201984.

It is an arithmetic number, because the mean of its divisors is an integer number (200210220201984).

Almost surely, 2^{400420440403967} is an apocalyptic number.

400420440403967 is a deficient number, since it is larger than the sum of its proper divisors (1).

400420440403967 is an equidigital number, since it uses as much as digits as its factorization.

400420440403967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 47.

The spelling of 400420440403967 in words is "four hundred trillion, four hundred twenty billion, four hundred forty million, four hundred three thousand, nine hundred sixty-seven".