438497856 has 84 divisors (see below), whose sum is σ = 1268185932. Its totient is φ = 144850944.

The previous prime is 438497837. The next prime is 438497869. The reversal of 438497856 is 658794834.

It can be written as a sum of positive squares in 2 ways, for example, as 88059456 + 350438400 = 9384^2 + 18720^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61720 + ... + 68456.

Almost surely, 2^438497856 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 438497856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634092966).

438497856 is an abundant number, since it is smaller than the sum of its proper divisors (829688076).

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

438497856 is a wasteful number, since it uses less digits than its factorization.

438497856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6868 (or 6855 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 438497856 is about 20940.3403983794. The cubic root of 438497856 is about 759.7239625419.

The spelling of 438497856 in words is "four hundred thirty-eight million, four hundred ninety-seven thousand, eight hundred fifty-six".