439431980 has 96 divisors (see below), whose sum is σ = 1081092096. Its totient is φ = 148525056.

The previous prime is 439431961. The next prime is 439431989. The reversal of 439431980 is 89134934.

It is not an unprimeable number, because it can be changed into a prime (439431989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162197 + ... + 164883.

It is an arithmetic number, because the mean of its divisors is an integer number (11261376).

Almost surely, 2^439431980 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 439431980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540546048).

439431980 is an abundant number, since it is smaller than the sum of its proper divisors (641660116).

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

439431980 is a wasteful number, since it uses less digits than its factorization.

439431980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763 (or 2761 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 439431980 is about 20962.6329453149. The cubic root of 439431980 is about 760.2630552921.

The spelling of 439431980 in words is "four hundred thirty-nine million, four hundred thirty-one thousand, nine hundred eighty".