422739578 has 16 divisors (see below), whose sum is σ = 689558184. Its totient is φ = 193559040.

The previous prime is 422739547. The next prime is 422739599. The reversal of 422739578 is 875937224.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 405740449 + 16999129 = 20143^2 + 4123^2 .

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 7 ways as a sum of consecutive naturals, for example, 166763 + ... + 169278.

Almost surely, 2^422739578 is an apocalyptic number.

422739578 is a deficient number, since it is larger than the sum of its proper divisors (266818606).

422739578 is a wasteful number, since it uses less digits than its factorization.

422739578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336097.

The product of its digits is 846720, while the sum is 47.

The square root of 422739578 is about 20560.6317509944. The cubic root of 422739578 is about 750.5119929233.

The spelling of 422739578 in words is "four hundred twenty-two million, seven hundred thirty-nine thousand, five hundred seventy-eight".