422778994 has 32 divisors (see below), whose sum is σ = 753364800. Its totient is φ = 175775040.

The previous prime is 422778977. The next prime is 422778997. The reversal of 422778994 is 499877224.

It is not an unprimeable number, because it can be changed into a prime (422778997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5317 + ... + 29560.

It is an arithmetic number, because the mean of its divisors is an integer number (23542650).

Almost surely, 2^422778994 is an apocalyptic number.

422778994 is a deficient number, since it is larger than the sum of its proper divisors (330585806).

422778994 is a wasteful number, since it uses less digits than its factorization.

422778994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34938.

The product of its digits is 2032128, while the sum is 52.

The square root of 422778994 is about 20561.5902595106. The cubic root of 422778994 is about 750.5353179701.

The spelling of 422778994 in words is "four hundred twenty-two million, seven hundred seventy-eight thousand, nine hundred ninety-four".