426645444 has 12 divisors (see below), whose sum is σ = 995506064. Its totient is φ = 142215144.

The previous prime is 426645431. The next prime is 426645463. The reversal of 426645444 is 444546624.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17776882 + ... + 17776905.

Almost surely, 2^426645444 is an apocalyptic number.

It is an amenable number.

426645444 is an abundant number, since it is smaller than the sum of its proper divisors (568860620).

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

426645444 is a wasteful number, since it uses less digits than its factorization.

426645444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35553794 (or 35553792 counting only the distinct ones).

The product of its digits is 368640, while the sum is 39.

The square root of 426645444 is about 20655.3974544185. The cubic root of 426645444 is about 752.8163408391.

The spelling of 426645444 in words is "four hundred twenty-six million, six hundred forty-five thousand, four hundred forty-four".