401422043989 has 2 divisors, whose sum is σ = 401422043990. Its totient is φ = 401422043988.

The previous prime is 401422043977. The next prime is 401422044047. The reversal of 401422043989 is 989340224104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378631008900 + 22791035089 = 615330^2 + 150967^2 .

It is a cyclic number.

It is not a de Polignac number, because 401422043989 - 2¹¹ = 401422041941 is a prime.

It is a super-2 number, since 2×401422043989² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401422043189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200711021994 + 200711021995.

It is an arithmetic number, because the mean of its divisors is an integer number (200711021995).

Almost surely, 2^401422043989 is an apocalyptic number.

It is an amenable number.

401422043989 is a deficient number, since it is larger than the sum of its proper divisors (1).

401422043989 is an equidigital number, since it uses as much as digits as its factorization.

401422043989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 401422043989 in words is "four hundred one billion, four hundred twenty-two million, forty-three thousand, nine hundred eighty-nine".