439938880 has 112 divisors (see below), whose sum is σ = 1092799440. Its totient is φ = 168542208.

The previous prime is 439938841. The next prime is 439938881. The reversal of 439938880 is 88839934.

It can be written as a sum of positive squares in 8 ways, for example, as 54523456 + 385415424 = 7384^2 + 19632^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439938881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 864066 + ... + 864574.

Almost surely, 2^439938880 is an apocalyptic number.

439938880 is a gapful number since it is divisible by the number (40) 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 439938880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546399720).

439938880 is an abundant number, since it is smaller than the sum of its proper divisors (652860560).

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

439938880 is a wasteful number, since it uses less digits than its factorization.

439938880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 439938880 is about 20974.7200219693. The cubic root of 439938880 is about 760.5552728769. Note that the first 3 decimals are identical.

The spelling of 439938880 in words is "four hundred thirty-nine million, nine hundred thirty-eight thousand, eight hundred eighty".