422555447 has 2 divisors, whose sum is σ = 422555448. Its totient is φ = 422555446.

The previous prime is 422555443. The next prime is 422555461. The reversal of 422555447 is 744555224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422555447 - 2² = 422555443 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422555447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422555443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211277723 + 211277724.

It is an arithmetic number, because the mean of its divisors is an integer number (211277724).

Almost surely, 2^422555447 is an apocalyptic number.

422555447 is a deficient number, since it is larger than the sum of its proper divisors (1).

422555447 is an equidigital number, since it uses as much as digits as its factorization.

422555447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224000, while the sum is 38.

The square root of 422555447 is about 20556.1535069186. The cubic root of 422555447 is about 750.4030112556.

The spelling of 422555447 in words is "four hundred twenty-two million, five hundred fifty-five thousand, four hundred forty-seven".