538485444 has 72 divisors (see below), whose sum is σ = 1566918080. Its totient is φ = 152736192.

The previous prime is 538485433. The next prime is 538485463. The reversal of 538485444 is 444584835.

538485444 is a `hidden beast` number, since 53 + 84 + 85 + 444 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 538485444.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27342 + ... + 42714.

Almost surely, 2^538485444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538485444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783459040).

538485444 is an abundant number, since it is smaller than the sum of its proper divisors (1028432636).

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

538485444 is a wasteful number, since it uses less digits than its factorization.

538485444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15529 (or 15524 counting only the distinct ones).

The product of its digits is 1228800, while the sum is 45.

The square root of 538485444 is about 23205.2891384701. The cubic root of 538485444 is about 813.5632503422.

The spelling of 538485444 in words is "five hundred thirty-eight million, four hundred eighty-five thousand, four hundred forty-four".