422768447 has 4 divisors (see below), whose sum is σ = 422897160. Its totient is φ = 422639736.

The previous prime is 422768443. The next prime is 422768471. The reversal of 422768447 is 744867224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422768447 - 2² = 422768443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422768398 and 422768407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422768443) 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 in 3 ways as a sum of consecutive naturals, for example, 59297 + ... + 66042.

It is an arithmetic number, because the mean of its divisors is an integer number (105724290).

Almost surely, 2^422768447 is an apocalyptic number.

422768447 is a deficient number, since it is larger than the sum of its proper divisors (128713).

422768447 is a wasteful number, since it uses less digits than its factorization.

422768447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128712.

The product of its digits is 602112, while the sum is 44.

The square root of 422768447 is about 20561.3337845578. Note that the first 3 decimals coincide. The cubic root of 422768447 is about 750.5290767567.

The spelling of 422768447 in words is "four hundred twenty-two million, seven hundred sixty-eight thousand, four hundred forty-seven".