438841656 has 96 divisors (see below), whose sum is σ = 1353006720. Its totient is φ = 127195200.

The previous prime is 438841649. The next prime is 438841657. The reversal of 438841656 is 656148834.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438841657) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6171 + ... + 30261.

It is an arithmetic number, because the mean of its divisors is an integer number (14093820).

Almost surely, 2^438841656 is an apocalyptic number.

438841656 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438841656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676503360).

438841656 is an abundant number, since it is smaller than the sum of its proper divisors (914165064).

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

438841656 is a wasteful number, since it uses less digits than its factorization.

438841656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24137 (or 24130 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 438841656 is about 20948.5478255654. The cubic root of 438841656 is about 759.9224620803.

The spelling of 438841656 in words is "four hundred thirty-eight million, eight hundred forty-one thousand, six hundred fifty-six".