439381920 has 48 divisors (see below), whose sum is σ = 1384054560. Its totient is φ = 117168384.

The previous prime is 439381889. The next prime is 439381931. The reversal of 439381920 is 29183934.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 457210 + ... + 458169.

It is an arithmetic number, because the mean of its divisors is an integer number (28834470).

Almost surely, 2^439381920 is an apocalyptic number.

439381920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

439381920 is an abundant number, since it is smaller than the sum of its proper divisors (944672640).

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

439381920 is a wasteful number, since it uses less digits than its factorization.

439381920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915397 (or 915389 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 439381920 is about 20961.4388819088. The cubic root of 439381920 is about 760.2341845259.

The spelling of 439381920 in words is "four hundred thirty-nine million, three hundred eighty-one thousand, nine hundred twenty".