422783811 has 12 divisors (see below), whose sum is σ = 612642888. Its totient is φ = 280953504.

The previous prime is 422783789. The next prime is 422783819. The reversal of 422783811 is 118387224.

422783811 is a `hidden beast` number, since 4 + 2 + 278 + 381 + 1 = 666.

It is not a de Polignac number, because 422783811 - 2⁹ = 422783299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (422783819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72225 + ... + 77858.

It is an arithmetic number, because the mean of its divisors is an integer number (51053574).

Almost surely, 2^422783811 is an apocalyptic number.

422783811 is a deficient number, since it is larger than the sum of its proper divisors (189859077).

422783811 is a wasteful number, since it uses less digits than its factorization.

422783811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150402 (or 150399 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 422783811 is about 20561.7073950584. The cubic root of 422783811 is about 750.5381684073.

The spelling of 422783811 in words is "four hundred twenty-two million, seven hundred eighty-three thousand, eight hundred eleven".