422444840 has 16 divisors (see below), whose sum is σ = 950500980. Its totient is φ = 168977920.

The previous prime is 422444839. The next prime is 422444861. The reversal of 422444840 is 48444224.

It can be written as a sum of positive squares in 2 ways, for example, as 407959204 + 14485636 = 20198^2 + 3806^2 .

It is a junction number, because it is equal to n+sod(n) for n = 422444797 and 422444806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5280521 + ... + 5280600.

Almost surely, 2^422444840 is an apocalyptic number.

422444840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422444840 is an abundant number, since it is smaller than the sum of its proper divisors (528056140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422444840 is a wasteful number, since it uses less digits than its factorization.

422444840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10561132 (or 10561128 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

The square root of 422444840 is about 20553.4629685608. The cubic root of 422444840 is about 750.3375310372.

The spelling of 422444840 in words is "four hundred twenty-two million, four hundred forty-four thousand, eight hundred forty".